9988888 has 32 divisors (see below), whose sum is σ = 23052960. Its totient is φ = 3951360.

The previous prime is 9988879. The next prime is 9988907. The reversal of 9988888 is 8888899.

It is a nialpdrome in base 10.

It is a zygodrome in base 10.

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, 6133 + ... + 7588.

It is an arithmetic number, because the mean of its divisors is an integer number (720405).

Almost surely, 2^9988888 is an apocalyptic number.

It is an amenable number.

9988888 is an abundant number, since it is smaller than the sum of its proper divisors (13064072).

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

9988888 is a wasteful number, since it uses less digits than its factorization.

9988888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13747 (or 13743 counting only the distinct ones).

The product of its digits is 2654208, while the sum is 58.

The square root of 9988888 is about 3160.5202103451. The cubic root of 9988888 is about 215.3636391660.

The spelling of 9988888 in words is "nine million, nine hundred eighty-eight thousand, eight hundred eighty-eight".