79926939 has 32 divisors (see below), whose sum is σ = 125280000. Its totient is φ = 50222592.

The previous prime is 79926937. The next prime is 79926961. The reversal of 79926939 is 93962997.

It is not a de Polignac number, because 79926939 - 2¹ = 79926937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (79926937) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 177787 + ... + 178235.

It is an arithmetic number, because the mean of its divisors is an integer number (3915000).

Almost surely, 2^79926939 is an apocalyptic number.

79926939 is a deficient number, since it is larger than the sum of its proper divisors (45353061).

79926939 is a wasteful number, since it uses less digits than its factorization.

79926939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 824 (or 818 counting only the distinct ones).

The product of its digits is 1653372, while the sum is 54.

The square root of 79926939 is about 8940.1867430161. The cubic root of 79926939 is about 430.7557270942.

The spelling of 79926939 in words is "seventy-nine million, nine hundred twenty-six thousand, nine hundred thirty-nine".