79391312 has 80 divisors (see below), whose sum is σ = 206570112. Its totient is φ = 28546560.

The previous prime is 79391303. The next prime is 79391321. The reversal of 79391312 is 21319397.

It is an interprime number because it is at equal distance from previous prime (79391303) and next prime (79391321).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13538 + ... + 18494.

Almost surely, 2^79391312 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 79391312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103285056).

79391312 is an abundant number, since it is smaller than the sum of its proper divisors (127178800).

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

79391312 is a wasteful number, since it uses less digits than its factorization.

79391312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4996 (or 4990 counting only the distinct ones).

The product of its digits is 10206, while the sum is 35.

The square root of 79391312 is about 8910.1802450904. The cubic root of 79391312 is about 429.7913391803.

The spelling of 79391312 in words is "seventy-nine million, three hundred ninety-one thousand, three hundred twelve".