79818965 has 8 divisors (see below), whose sum is σ = 98010528. Its totient is φ = 62370000.

The previous prime is 79818941. The next prime is 79818967. The reversal of 79818965 is 56981897.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 79818965 - 2²⁴ = 63041749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79818967) 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 7 ways as a sum of consecutive naturals, for example, 185411 + ... + 185840.

It is an arithmetic number, because the mean of its divisors is an integer number (12251316).

Almost surely, 2^79818965 is an apocalyptic number.

It is an amenable number.

79818965 is a deficient number, since it is larger than the sum of its proper divisors (18191563).

79818965 is a wasteful number, since it uses less digits than its factorization.

79818965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371299.

The product of its digits is 1088640, while the sum is 53.

The square root of 79818965 is about 8934.1460140295. The cubic root of 79818965 is about 430.5616691250.

The spelling of 79818965 in words is "seventy-nine million, eight hundred eighteen thousand, nine hundred sixty-five".