79988886 has 12 divisors (see below), whose sum is σ = 173309292. Its totient is φ = 26662956.

The previous prime is 79988861. The next prime is 79988899. The reversal of 79988886 is 68888997.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2221896 + ... + 2221931.

It is an arithmetic number, because the mean of its divisors is an integer number (14442441).

Almost surely, 2^79988886 is an apocalyptic number.

79988886 is an abundant number, since it is smaller than the sum of its proper divisors (93320406).

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

79988886 is a wasteful number, since it uses less digits than its factorization.

79988886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4443835 (or 4443832 counting only the distinct ones).

The product of its digits is 13934592, while the sum is 63.

The square root of 79988886 is about 8943.6505969319. The cubic root of 79988886 is about 430.8669834263.

The spelling of 79988886 in words is "seventy-nine million, nine hundred eighty-eight thousand, eight hundred eighty-six".