7939456137 has 24 divisors (see below), whose sum is σ = 11898219424. Its totient is φ = 5290580448.

The previous prime is 7939456099. The next prime is 7939456139. The reversal of 7939456137 is 7316549397.

It is a happy number.

7939456137 is a `hidden beast` number, since 79 + 3 + 9 + 4 + 561 + 3 + 7 = 666.

It is not a de Polignac number, because 7939456137 - 2¹⁵ = 7939423369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7939456139) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 653238 + ... + 665280.

Almost surely, 2^7939456137 is an apocalyptic number.

It is an amenable number.

7939456137 is a deficient number, since it is larger than the sum of its proper divisors (3958763287).

7939456137 is a wasteful number, since it uses less digits than its factorization.

7939456137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14771 (or 14759 counting only the distinct ones).

The product of its digits is 4286520, while the sum is 54.

The square root of 7939456137 is about 89103.6258353160. The cubic root of 7939456137 is about 1994.9418966627.

It can be divided in two parts, 79394 and 56137, that added together give a palindrome (135531).

The spelling of 7939456137 in words is "seven billion, nine hundred thirty-nine million, four hundred fifty-six thousand, one hundred thirty-seven".