72794979 has 6 divisors (see below), whose sum is σ = 105148316. Its totient is φ = 48529980.

The previous prime is 72794957. The next prime is 72794983. The reversal of 72794979 is 97949727.

It is not a de Polignac number, because 72794979 - 2¹¹ = 72792931 is a prime.

It is a super-2 number, since 2×72794979² = 10598217935220882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72794179) 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 5 ways as a sum of consecutive naturals, for example, 4044157 + ... + 4044174.

Almost surely, 2^72794979 is an apocalyptic number.

72794979 is a deficient number, since it is larger than the sum of its proper divisors (32353337).

72794979 is a wasteful number, since it uses less digits than its factorization.

72794979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8088337 (or 8088334 counting only the distinct ones).

The product of its digits is 2000376, while the sum is 54.

The square root of 72794979 is about 8531.9973628688. The cubic root of 72794979 is about 417.5422960245.

The spelling of 72794979 in words is "seventy-two million, seven hundred ninety-four thousand, nine hundred seventy-nine".