9988313888 has 24 divisors (see below), whose sum is σ = 22473706752. Its totient is φ = 4280705856.

The previous prime is 9988313879. The next prime is 9988313903. The reversal of 9988313888 is 8883138899.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22295120 + ... + 22295567.

It is an arithmetic number, because the mean of its divisors is an integer number (936404448).

Almost surely, 2^9988313888 is an apocalyptic number.

It is an amenable number.

9988313888 is an abundant number, since it is smaller than the sum of its proper divisors (12485392864).

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

9988313888 is a wasteful number, since it uses less digits than its factorization.

9988313888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44590704 (or 44590696 counting only the distinct ones).

The product of its digits is 23887872, while the sum is 65.

The square root of 9988313888 is about 99941.5523593665. The cubic root of 9988313888 is about 2153.5951307380.

The spelling of 9988313888 in words is "nine billion, nine hundred eighty-eight million, three hundred thirteen thousand, eight hundred eighty-eight".