79721795 has 16 divisors (see below), whose sum is σ = 100118592. Its totient is φ = 60825600.

The previous prime is 79721779. The next prime is 79721819. The reversal of 79721795 is 59712797.

It is not a de Polignac number, because 79721795 - 2⁴ = 79721779 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 48995 + ... + 50595.

It is an arithmetic number, because the mean of its divisors is an integer number (6257412).

Almost surely, 2^79721795 is an apocalyptic number.

79721795 is a deficient number, since it is larger than the sum of its proper divisors (20396797).

79721795 is a wasteful number, since it uses less digits than its factorization.

79721795 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2062.

The product of its digits is 277830, while the sum is 47.

The square root of 79721795 is about 8928.7062332681. The cubic root of 79721795 is about 430.3868791432.

The spelling of 79721795 in words is "seventy-nine million, seven hundred twenty-one thousand, seven hundred ninety-five".