99390868 has 12 divisors (see below), whose sum is σ = 175656852. Its totient is φ = 49203200.

The previous prime is 99390833. The next prime is 99390871. The reversal of 99390868 is 86809399.

It can be written as a sum of positive squares in 2 ways, for example, as 98366724 + 1024144 = 9918^2 + 1012^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122605 + ... + 123412.

It is an arithmetic number, because the mean of its divisors is an integer number (14638071).

Almost surely, 2^99390868 is an apocalyptic number.

It is an amenable number.

99390868 is a deficient number, since it is larger than the sum of its proper divisors (76265984).

99390868 is a wasteful number, since it uses less digits than its factorization.

99390868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246122 (or 246120 counting only the distinct ones).

The product of its (nonzero) digits is 839808, while the sum is 52.

The square root of 99390868 is about 9969.4968779773. The cubic root of 99390868 is about 463.2145165144.

The spelling of 99390868 in words is "ninety-nine million, three hundred ninety thousand, eight hundred sixty-eight".