99888161 has 8 divisors (see below), whose sum is σ = 100962048. Its totient is φ = 98820000.

The previous prime is 99888157. The next prime is 99888179. The reversal of 99888161 is 16188899.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 99888161 - 2² = 99888157 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99888101) 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, 39701 + ... + 42141.

It is an arithmetic number, because the mean of its divisors is an integer number (12620256).

Almost surely, 2^99888161 is an apocalyptic number.

It is an amenable number.

99888161 is a deficient number, since it is larger than the sum of its proper divisors (1073887).

99888161 is a wasteful number, since it uses less digits than its factorization.

99888161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2863.

The product of its digits is 248832, while the sum is 50.

The square root of 99888161 is about 9994.4064856298. The cubic root of 99888161 is about 463.9857819291.

The spelling of 99888161 in words is "ninety-nine million, eight hundred eighty-eight thousand, one hundred sixty-one".