99888 has 20 divisors (see below), whose sum is σ = 258168. Its totient is φ = 33280.

The previous prime is 99881. The next prime is 99901. The reversal of 99888 is 88899.

It is a super-2 number, since 2×99888² = 19955225088, which contains 22 as substring.

It is a nialpdrome in base 10.

It is a zygodrome in base 2 and base 10.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 99888.

It is not an unprimeable number, because it can be changed into a prime (99881) by changing a digit.

99888 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 993 + ... + 1088.

2⁹⁹⁸⁸⁸ is an apocalyptic number.

It is an amenable number.

99888 is an abundant number, since it is smaller than the sum of its proper divisors (158280).

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (129084).

99888 is a wasteful number, since it uses less digits than its factorization.

99888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2092 (or 2086 counting only the distinct ones).

The product of its digits is 41472, while the sum is 42.

The square root of 99888 is about 316.0506288556. The cubic root of 99888 is about 46.3985532644.

The spelling of 99888 in words is "ninety-nine thousand, eight hundred eighty-eight".