99918595 has 24 divisors (see below), whose sum is σ = 139946400. Its totient is φ = 68285952.

The previous prime is 99918589. The next prime is 99918607. The reversal of 99918595 is 59581999.

It is not a de Polignac number, because 99918595 - 2⁵ = 99918563 is a prime.

It is a Smith number, since the sum of its digits (55) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 107091 + ... + 108019.

It is an arithmetic number, because the mean of its divisors is an integer number (5831100).

Almost surely, 2^99918595 is an apocalyptic number.

99918595 is a deficient number, since it is larger than the sum of its proper divisors (40027805).

99918595 is a wasteful number, since it uses less digits than its factorization.

99918595 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1387 (or 1380 counting only the distinct ones).

The product of its digits is 1312200, while the sum is 55.

The square root of 99918595 is about 9995.9289213159. The cubic root of 99918595 is about 464.0328996564.

The spelling of 99918595 in words is "ninety-nine million, nine hundred eighteen thousand, five hundred ninety-five".