79974477 has 96 divisors (see below), whose sum is σ = 146240640. Its totient is φ = 41472000.

The previous prime is 79974467. The next prime is 79974487. The reversal of 79974477 is 77447997.

It is an interprime number because it is at equal distance from previous prime (79974467) and next prime (79974487).

It is not a de Polignac number, because 79974477 - 2⁶ = 79974413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79974457) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1311027 + ... + 1311087.

It is an arithmetic number, because the mean of its divisors is an integer number (1523340).

Almost surely, 2^79974477 is an apocalyptic number.

It is an amenable number.

79974477 is a deficient number, since it is larger than the sum of its proper divisors (66266163).

79974477 is a wasteful number, since it uses less digits than its factorization.

79974477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155 (or 152 counting only the distinct ones).

The product of its digits is 3111696, while the sum is 54.

The square root of 79974477 is about 8942.8450171073. The cubic root of 79974477 is about 430.8411101019.

The spelling of 79974477 in words is "seventy-nine million, nine hundred seventy-four thousand, four hundred seventy-seven".