99799992 has 64 divisors (see below), whose sum is σ = 279417600. Its totient is φ = 33003360.

The previous prime is 99799981. The next prime is 99799993. The reversal of 99799992 is 29999799.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99799993) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26533 + ... + 30059.

It is an arithmetic number, because the mean of its divisors is an integer number (4365900).

Almost surely, 2^99799992 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99799992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139708800).

99799992 is an abundant number, since it is smaller than the sum of its proper divisors (179617608).

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

99799992 is a wasteful number, since it uses less digits than its factorization.

99799992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3673 (or 3663 counting only the distinct ones).

The product of its digits is 7440174, while the sum is 63.

The square root of 99799992 is about 9989.9945945931. The cubic root of 99799992 is about 463.8492251892.

The spelling of 99799992 in words is "ninety-nine million, seven hundred ninety-nine thousand, nine hundred ninety-two".