99900888 has 32 divisors (see below), whose sum is σ = 256504560. Its totient is φ = 32400000.

The previous prime is 99900883. The next prime is 99900893. The reversal of 99900888 is 88800999.

It is an interprime number because it is at equal distance from previous prime (99900883) and next prime (99900893).

It is a zygodrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 99900888.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99900883) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55363 + ... + 57138.

Almost surely, 2^99900888 is an apocalyptic number.

It is an amenable number.

99900888 is an abundant number, since it is smaller than the sum of its proper divisors (156603672).

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

99900888 is a wasteful number, since it uses less digits than its factorization.

99900888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112547 (or 112543 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 51.

The square root of 99900888 is about 9995.0431714926. The cubic root of 99900888 is about 464.0054869545.

The spelling of 99900888 in words is "ninety-nine million, nine hundred thousand, eight hundred eighty-eight".