79165040 has 40 divisors (see below), whose sum is σ = 187541568. Its totient is φ = 31066880.

The previous prime is 79165033. The next prime is 79165043. The reversal of 79165040 is 4056197.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 79164988 and 79165006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79165043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5096 + ... + 13575.

Almost surely, 2^79165040 is an apocalyptic number.

It is an amenable number.

79165040 is an abundant number, since it is smaller than the sum of its proper divisors (108376528).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

79165040 is a wasteful number, since it uses less digits than its factorization.

79165040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18737 (or 18731 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 79165040 is about 8897.4737987813. The cubic root of 79165040 is about 429.3826366828.

The spelling of 79165040 in words is "seventy-nine million, one hundred sixty-five thousand, forty".