79442973 has 24 divisors (see below), whose sum is σ = 118619072. Its totient is φ = 51202368.

The previous prime is 79442947. The next prime is 79442983. The reversal of 79442973 is 37924497.

It is not a de Polignac number, because 79442973 - 2⁵ = 79442941 is a prime.

It is a super-2 number, since 2×79442973² = 12622371918157458, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79442983) 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 23 ways as a sum of consecutive naturals, for example, 38865 + ... + 40857.

Almost surely, 2^79442973 is an apocalyptic number.

It is an amenable number.

79442973 is a deficient number, since it is larger than the sum of its proper divisors (39176099).

79442973 is a wasteful number, since it uses less digits than its factorization.

79442973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2145 (or 2142 counting only the distinct ones).

The product of its digits is 381024, while the sum is 45.

The square root of 79442973 is about 8913.0787610118. The cubic root of 79442973 is about 429.8845426453.

The spelling of 79442973 in words is "seventy-nine million, four hundred forty-two thousand, nine hundred seventy-three".