99420864 has 28 divisors (see below), whose sum is σ = 263051544. Its totient is φ = 33140224.

The previous prime is 99420857. The next prime is 99420877. The reversal of 99420864 is 46802499.

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, 258717 + ... + 259100.

It is an arithmetic number, because the mean of its divisors is an integer number (9394698).

Almost surely, 2^99420864 is an apocalyptic number.

It is an amenable number.

99420864 is an abundant number, since it is smaller than the sum of its proper divisors (163630680).

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

99420864 is a wasteful number, since it uses less digits than its factorization.

99420864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 517832 (or 517822 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 42.

The square root of 99420864 is about 9971.0011533446. The cubic root of 99420864 is about 463.2611109530.

The spelling of 99420864 in words is "ninety-nine million, four hundred twenty thousand, eight hundred sixty-four".