79791012 has 54 divisors (see below), whose sum is σ = 234628758. Its totient is φ = 22796928.

The previous prime is 79790999. The next prime is 79791031. The reversal of 79791012 is 21019797.

It can be written as a sum of positive squares in only one way, i.e., 79281216 + 509796 = 8904^2 + 714^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 20853 + ... + 24380.

It is an arithmetic number, because the mean of its divisors is an integer number (4344977).

Almost surely, 2^79791012 is an apocalyptic number.

It is an amenable number.

79791012 is an abundant number, since it is smaller than the sum of its proper divisors (154837746).

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

79791012 is a wasteful number, since it uses less digits than its factorization.

79791012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45257 (or 45245 counting only the distinct ones).

The product of its (nonzero) digits is 7938, while the sum is 36.

The square root of 79791012 is about 8932.5814857744. The cubic root of 79791012 is about 430.5114016413.

It can be divided in two parts, 797 and 91012, that added together give a square (91809 = 303²).

The spelling of 79791012 in words is "seventy-nine million, seven hundred ninety-one thousand, twelve".