79424865 has 48 divisors (see below), whose sum is σ = 154732032. Its totient is φ = 37395072.

The previous prime is 79424857. The next prime is 79424909. The reversal of 79424865 is 56842497.

It is a happy number.

It is not a de Polignac number, because 79424865 - 2³ = 79424857 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 79424865.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10504 + ... + 16406.

It is an arithmetic number, because the mean of its divisors is an integer number (3223584).

Almost surely, 2^79424865 is an apocalyptic number.

It is an amenable number.

79424865 is a deficient number, since it is larger than the sum of its proper divisors (75307167).

79424865 is a wasteful number, since it uses less digits than its factorization.

79424865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5950 (or 5947 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The square root of 79424865 is about 8912.0628925070. The cubic root of 79424865 is about 429.8518779529.

The spelling of 79424865 in words is "seventy-nine million, four hundred twenty-four thousand, eight hundred sixty-five".