79990992 has 120 divisors (see below), whose sum is σ = 233985024. Its totient is φ = 25489152.

The previous prime is 79990979. The next prime is 79991011. The reversal of 79990992 is 29909997.

It is a super-2 number, since 2×79990992² = 12797117602288128, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 358593 + ... + 358815.

Almost surely, 2^79990992 is an apocalyptic number.

79990992 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 79990992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116992512).

79990992 is an abundant number, since it is smaller than the sum of its proper divisors (153994032).

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

79990992 is a wasteful number, since it uses less digits than its factorization.

79990992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337 (or 328 counting only the distinct ones).

The product of its (nonzero) digits is 826686, while the sum is 54.

The square root of 79990992 is about 8943.7683333145. The cubic root of 79990992 is about 430.8707647763.

It can be divided in two parts, 7 and 9990992, that added together give a palindrome (9990999).

The spelling of 79990992 in words is "seventy-nine million, nine hundred ninety thousand, nine hundred ninety-two".