99729992 has 16 divisors (see below), whose sum is σ = 188742960. Its totient is φ = 49398544.

The previous prime is 99729989. The next prime is 99730009. The reversal of 99729992 is 29992799.

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, 57398 + ... + 59109.

It is an arithmetic number, because the mean of its divisors is an integer number (11796435).

Almost surely, 2^99729992 is an apocalyptic number.

It is an amenable number.

99729992 is a deficient number, since it is larger than the sum of its proper divisors (89012968).

99729992 is a wasteful number, since it uses less digits than its factorization.

99729992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116620 (or 116616 counting only the distinct ones).

The product of its digits is 1653372, while the sum is 56.

The square root of 99729992 is about 9986.4904746362. The cubic root of 99729992 is about 463.7407514327.

The spelling of 99729992 in words is "ninety-nine million, seven hundred twenty-nine thousand, nine hundred ninety-two".