7944 (number)
7,944 (seven thousand nine hundred fortyfour) is an even fourdigits composite number following 7943 and preceding 7945. In scientific notation, it is written as 7.944 × 10^{3}. The sum of its digits is 24. It has a total of 5 prime factors and 16 positive divisors. There are 2,640 positive integers (up to 7944) that are relatively prime to 7944.
Basic properties
 Is Prime? No
 Number parity Even
 Number length 4
 Sum of Digits 24
 Digital Root 6
Name
Short name  7 thousand 944 

Full name  seven thousand nine hundred fortyfour 
Notation
Scientific notation  7.944 × 10^{3} 

Engineering notation  7.944 × 10^{3} 
Prime Factorization of 7944
Prime Factorization 2^{3} × 3 × 331
Composite numberω(n)  Distinct Factors  3  Total number of distinct prime factors 

Ω(n)  Total Factors  5  Total number of prime factors 
rad(n)  Radical  1986  Product of the distinct prime numbers 
λ(n)  Liouville Lambda  1  Returns the parity of Ω(n), such that λ(n) = (1)^{Ω(n)} 
μ(n)  Mobius Mu  0  Returns:

Λ(n)  Mangoldt function  0  Returns log(p) if n is a power p^{k} of any prime p (for any k >= 1), else returns 0 
The prime factorization of 7,944 is 2^{3} × 3 × 331. Since it has a total of 5 prime factors, 7,944 is a composite number.
Divisors of 7944
16 divisors
τ(n)  Total Divisors  16  Total number of the positive divisors of n 

σ(n)  Sum of Divisors  19920  Sum of all the positive divisors of n 
s(n)  Aliquot Sum  11976  Sum of the proper positive divisors of n 
A(n)  Arithmetic Mean  1245  Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n)) 
G(n)  Geometric Mean  89.129119820629  Returns the nth root of the product of n divisors 
H(n)  Harmonic Mean  6.3807228915663  Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors 
The number 7,944 can be divided by 16 positive divisors (out of which 12 are even, and 4 are odd). The sum of these divisors (counting 7,944) is 19,920, the average is 1,245.
Other Arithmetic Functions (n = 7944)
φ(n)  Euler Totient  2640  Total number of positive integers not greater than n that are coprime to n 

λ(n)  Carmichael Lambda  660  Smallest positive number such that a^{λ(n)} ≡ 1 (mod n) for all a coprime to n 
π(n)  Prime Pi  ≈ 1006  Total number of primes less than or equal to n 
r_{2}(n)  Sum of 2 squares  0  The number of ways n can be represented as the sum of 2 squares 
There are 2,640 positive integers (less than 7,944) that are coprime with 7,944. And there are approximately 1,006 prime numbers less than or equal to 7,944.
Divisibility of 7944
m  2  3  4  5  6  7  8  9 

n mod m  0  0  0  4  0  6  0  6 
The number 7,944 is divisible by 2, 3, 4, 6 and 8.
Classification of 7944
By Arithmetic functions
 Arithmetic
 Abundant
Expressible via specific sums
 Polite
 Nonhypotenuse
By Shape (2D, noncentered)
 Nonagonal
Base conversion (7944)
Base  System  Value 

2  Binary  1111100001000 
3  Ternary  101220020 
4  Quaternary  1330020 
5  Quinary  223234 
6  Senary  100440 
8  Octal  17410 
10  Decimal  7944 
12  Duodecimal  4720 
16  Hexadecimal  1f08 
20  Vigesimal  jh4 
36  Base36  64o 
Basic calculations (n = 7944)
Multiplication
n×yn×2  15888 

n×3  23832 
n×4  31776 
n×5  39720 
Division
n÷yn÷2  3972.000 

n÷3  2648.000 
n÷4  1986.000 
n÷5  1588.800 
Exponentiation
n^{y}n^{2}  63107136 

n^{3}  501323088384 
n^{4}  3982510614122496 
n^{5}  31637064318589108224 
Nth Root
^{y}√n^{2}√n  89.129119820629 

^{3}√n  19.953224019001 
^{4}√n  9.4408219886104 
^{5}√n  6.0257047358667 
7944 as geometric shapes
Circle
Radius = nDiameter  15888 

Circumference  49913.624080235 
Area  198256914.84669 
Sphere
Radius = nVolume  2099937242056.2 

Surface area  793027659.38677 
Circumference  49913.624080235 
Square
Length = nPerimeter  31776 

Area  63107136 
Diagonal  11234.512539492 
Cube
Length = nSurface area  378642816 

Volume  501323088384 
Space diagonal  13759.411615327 
Equilateral Triangle
Length = nPerimeter  23832 

Area  27326191.46804 
Altitude  6879.7058076636 
Triangular Pyramid
Length = nSurface area  109304765.87216 

Volume  59081492560.285 
Height  6486.2488388899 
Cryptographic Hash Functions
md5  0aed23da2775d1ffec4e951b99f3cca8 

sha1  a128426846ae352e8649434efb8dc32db141da8d 
sha256  327ec29056cc47c24bf922f7dc0f78261dad5c726d7353a4048aa730e8fabe0f 
sha512  036960da2598aa9e1158fdb0cb6bc7df7dab1871093b0b839a3822b98b0b90a632dab6ab0b464d53e2b6035661b01e263a674f654443b70fb680f6bbe5550ed4 
ripemd160  eb3b89f801160cb52e58528bc72a31c80130b6c2 