79722951 has 48 divisors (see below), whose sum is σ = 137894400. Its totient is φ = 40494720.

The previous prime is 79722947. The next prime is 79722953. The reversal of 79722951 is 15922797.

It is not a de Polignac number, because 79722951 - 2² = 79722947 is a prime.

It is a super-2 number, since 2×79722951² = 12711497832296802, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79722953) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 75475 + ... + 76523.

It is an arithmetic number, because the mean of its divisors is an integer number (2872800).

Almost surely, 2^79722951 is an apocalyptic number.

79722951 is a deficient number, since it is larger than the sum of its proper divisors (58171449).

79722951 is a wasteful number, since it uses less digits than its factorization.

79722951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1124 (or 1117 counting only the distinct ones).

The product of its digits is 79380, while the sum is 42.

The square root of 79722951 is about 8928.7709680560. The cubic root of 79722951 is about 430.3889593975.

The spelling of 79722951 in words is "seventy-nine million, seven hundred twenty-two thousand, nine hundred fifty-one".