99819992 has 16 divisors (see below), whose sum is σ = 188106000. Its totient is φ = 49658400.

The previous prime is 99819983. The next prime is 99820003. The reversal of 99819992 is 29991899.

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, 29759 + ... + 32942.

It is an arithmetic number, because the mean of its divisors is an integer number (11756625).

Almost surely, 2^99819992 is an apocalyptic number.

It is an amenable number.

99819992 is a deficient number, since it is larger than the sum of its proper divisors (88286008).

99819992 is a wasteful number, since it uses less digits than its factorization.

99819992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62906 (or 62902 counting only the distinct ones).

The product of its digits is 944784, while the sum is 56.

The square root of 99819992 is about 9990.9955459904. The cubic root of 99819992 is about 463.8802083743.

The spelling of 99819992 in words is "ninety-nine million, eight hundred nineteen thousand, nine hundred ninety-two".