79988888 has 32 divisors (see below), whose sum is σ = 173971200. Its totient is φ = 33767712.

The previous prime is 79988861. The next prime is 79988899. The reversal of 79988888 is 88888997.

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, 6908 + ... + 14411.

It is an arithmetic number, because the mean of its divisors is an integer number (5436600).

Almost surely, 2^79988888 is an apocalyptic number.

It is an amenable number.

79988888 is an abundant number, since it is smaller than the sum of its proper divisors (93982312).

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

79988888 is a wasteful number, since it uses less digits than its factorization.

79988888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21399 (or 21395 counting only the distinct ones).

The product of its digits is 18579456, while the sum is 65.

The square root of 79988888 is about 8943.6507087430. The cubic root of 79988888 is about 430.8669870174.

The spelling of 79988888 in words is "seventy-nine million, nine hundred eighty-eight thousand, eight hundred eighty-eight".