79989684 has 24 divisors (see below), whose sum is σ = 187393248. Its totient is φ = 26556000.

The previous prime is 79989661. The next prime is 79989691. The reversal of 79989684 is 48698997.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10267 + ... + 16290.

It is an arithmetic number, because the mean of its divisors is an integer number (7808052).

Almost surely, 2^79989684 is an apocalyptic number.

It is an amenable number.

79989684 is an abundant number, since it is smaller than the sum of its proper divisors (107403564).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

79989684 is a wasteful number, since it uses less digits than its factorization.

79989684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26815 (or 26813 counting only the distinct ones).

The product of its digits is 7838208, while the sum is 60.

The square root of 79989684 is about 8943.6952094758. The cubic root of 79989684 is about 430.8684162533.

The spelling of 79989684 in words is "seventy-nine million, nine hundred eighty-nine thousand, six hundred eighty-four".