79616931 has 4 divisors (see below), whose sum is σ = 106155912. Its totient is φ = 53077952.

The previous prime is 79616923. The next prime is 79616981. The reversal of 79616931 is 13961697.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 79616931 - 2³ = 79616923 is a prime.

It is a super-2 number, since 2×79616931² = 12677711403717522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (79616981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13269486 + ... + 13269491.

It is an arithmetic number, because the mean of its divisors is an integer number (26538978).

Almost surely, 2^79616931 is an apocalyptic number.

79616931 is a deficient number, since it is larger than the sum of its proper divisors (26538981).

79616931 is a wasteful number, since it uses less digits than its factorization.

79616931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26538980.

The product of its digits is 61236, while the sum is 42.

The square root of 79616931 is about 8922.8320055911. The cubic root of 79616931 is about 430.1980897300.

The spelling of 79616931 in words is "seventy-nine million, six hundred sixteen thousand, nine hundred thirty-one".