99800920 has 32 divisors (see below), whose sum is σ = 236372400. Its totient is φ = 37819008.

The previous prime is 99800891. The next prime is 99800957. The reversal of 99800920 is 2900899.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 99800920.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64899 + ... + 66418.

Almost surely, 2^99800920 is an apocalyptic number.

It is an amenable number.

99800920 is an abundant number, since it is smaller than the sum of its proper divisors (136571480).

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

99800920 is a wasteful number, since it uses less digits than its factorization.

99800920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131347 (or 131343 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 37.

The square root of 99800920 is about 9990.0410409567. The cubic root of 99800920 is about 463.8506629006.

The spelling of 99800920 in words is "ninety-nine million, eight hundred thousand, nine hundred twenty".