79972412 has 24 divisors (see below), whose sum is σ = 152847072. Its totient is φ = 36388800.

The previous prime is 79972379. The next prime is 79972421. The reversal of 79972412 is 21427997.

It is a self number, because there is not a number n which added to its sum of digits gives 79972412.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7139 + ... + 14522.

It is an arithmetic number, because the mean of its divisors is an integer number (6368628).

Almost surely, 2^79972412 is an apocalyptic number.

It is an amenable number.

79972412 is a deficient number, since it is larger than the sum of its proper divisors (72874660).

79972412 is a wasteful number, since it uses less digits than its factorization.

79972412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21749 (or 21747 counting only the distinct ones).

The product of its digits is 63504, while the sum is 41.

The square root of 79972412 is about 8942.7295609338. The cubic root of 79972412 is about 430.8374018582.

The spelling of 79972412 in words is "seventy-nine million, nine hundred seventy-two thousand, four hundred twelve".