79939572 has 24 divisors (see below), whose sum is σ = 189688800. Its totient is φ = 26194656.

The previous prime is 79939571. The next prime is 79939591. The reversal of 79939572 is 27593997.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79939571) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55747 + ... + 57162.

It is an arithmetic number, because the mean of its divisors is an integer number (7903700).

Almost surely, 2^79939572 is an apocalyptic number.

It is an amenable number.

79939572 is an abundant number, since it is smaller than the sum of its proper divisors (109749228).

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

79939572 is a wasteful number, since it uses less digits than its factorization.

79939572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112975 (or 112973 counting only the distinct ones).

The product of its digits is 1071630, while the sum is 51.

The square root of 79939572 is about 8940.8932439662. The cubic root of 79939572 is about 430.7784205294.

The spelling of 79939572 in words is "seventy-nine million, nine hundred thirty-nine thousand, five hundred seventy-two".