99998992 has 20 divisors (see below), whose sum is σ = 195632320. Its totient is φ = 49513248.

The previous prime is 99998971. The next prime is 99998999. The reversal of 99998992 is 29989999.

It is not an unprimeable number, because it can be changed into a prime (99998999) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28692 + ... + 31987.

It is an arithmetic number, because the mean of its divisors is an integer number (9781616).

Almost surely, 2^99998992 is an apocalyptic number.

It is an amenable number.

99998992 is a deficient number, since it is larger than the sum of its proper divisors (95633328).

99998992 is a wasteful number, since it uses less digits than its factorization.

99998992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60790 (or 60784 counting only the distinct ones).

The product of its digits is 8503056, while the sum is 64.

The square root of 99998992 is about 9999.9495998730. The cubic root of 99998992 is about 464.1573237822.

The spelling of 99998992 in words is "ninety-nine million, nine hundred ninety-eight thousand, nine hundred ninety-two".