99988885 has 8 divisors (see below), whose sum is σ = 120047616. Its totient is φ = 79950480.

The previous prime is 99988879. The next prime is 99988913. The reversal of 99988885 is 58888999.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 99988885 - 2⁵ = 99988853 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9612 + ... + 17098.

It is an arithmetic number, because the mean of its divisors is an integer number (15005952).

Almost surely, 2^99988885 is an apocalyptic number.

It is an amenable number.

99988885 is a deficient number, since it is larger than the sum of its proper divisors (20058731).

99988885 is a wasteful number, since it uses less digits than its factorization.

99988885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10163.

The product of its digits is 14929920, while the sum is 64.

The square root of 99988885 is about 9999.4442345562. Note that the first 3 decimals coincide. The cubic root of 99988885 is about 464.1416856375.

The spelling of 99988885 in words is "ninety-nine million, nine hundred eighty-eight thousand, eight hundred eighty-five".