39
39 is an odd composite number composed of two prime numbers multiplied together.
39 is an odd composite number. It is composed of two distinct prime numbers multiplied together. It has a total of four divisors.
Prime factorization of 39:
3^{} × 13^{}
See below for interesting mathematical facts about the number 39 from the Numbermatics database.
Names of 39
 Cardinal: 39 can be written as Thirtynine.
Scientific notation
 Scientific notation: 3.9 × 10^{1}
Factors of 39
 Number of distinct prime factors ω(n): 2
 Total number of prime factors Ω(n): 2
 Sum of prime factors: 16
Divisors of 39
 Number of divisors d(n): 4
 Complete list of divisors:
 Sum of all divisors σ(n): 56
 Sum of proper divisors (its aliquot sum) s(n): 17
 39 is a deficient number, because the sum of its proper divisors (17) is less than itself. Its deficiency is 22
Bases of 39
 Binary: 100111_{2}
 Hexadecimal: 0x27
 Base36: 13
Squares and roots of 39
 39 squared (39^{2}) is 1521
 39 cubed (39^{3}) is 59319

The
square root of 39 is 6.2449979984 
The
cube root of 39 is 3.3912114431
Scales and comparisons
How big is 39? A cube with a volume of 39 cubic inches would be around 0.3 feet tall.
Recreational maths with 39
 39 backwards is 93
 The number of decimal digits it has is: 2
 The sum of 39's digits is 12
 More coming soon!
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