79990974 has 48 divisors (see below), whose sum is σ = 204472320. Its totient is φ = 22116240.

The previous prime is 79990957. The next prime is 79990979. The reversal of 79990974 is 47909997.

It is a self number, because there is not a number n which added to its sum of digits gives 79990974.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79990979) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6334 + ... + 14145.

It is an arithmetic number, because the mean of its divisors is an integer number (4259840).

Almost surely, 2^79990974 is an apocalyptic number.

79990974 is an abundant number, since it is smaller than the sum of its proper divisors (124481346).

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

79990974 is a wasteful number, since it uses less digits than its factorization.

79990974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20525 (or 20522 counting only the distinct ones).

The product of its (nonzero) digits is 1285956, while the sum is 54.

The square root of 79990974 is about 8943.7673270272. The cubic root of 79990974 is about 430.8707324573.

The spelling of 79990974 in words is "seventy-nine million, nine hundred ninety thousand, nine hundred seventy-four".