79934721 has 16 divisors (see below), whose sum is σ = 109500864. Its totient is φ = 51839424.

The previous prime is 79934681. The next prime is 79934737. The reversal of 79934721 is 12743997.

It is not a de Polignac number, because 79934721 - 2¹⁰ = 79933697 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (79934761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34615 + ... + 36851.

It is an arithmetic number, because the mean of its divisors is an integer number (6843804).

Almost surely, 2^79934721 is an apocalyptic number.

It is an amenable number.

79934721 is a deficient number, since it is larger than the sum of its proper divisors (29566143).

79934721 is a wasteful number, since it uses less digits than its factorization.

79934721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2560.

The product of its digits is 95256, while the sum is 42.

The square root of 79934721 is about 8940.6219582309. The cubic root of 79934721 is about 430.7697066624.

The spelling of 79934721 in words is "seventy-nine million, nine hundred thirty-four thousand, seven hundred twenty-one".