79989215 has 8 divisors (see below), whose sum is σ = 96037920. Its totient is φ = 63957472.

The previous prime is 79989187. The next prime is 79989229. The reversal of 79989215 is 51298997.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 79989215 - 2²⁴ = 63211999 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11366 + ... + 17004.

It is an arithmetic number, because the mean of its divisors is an integer number (12004740).

Almost surely, 2^79989215 is an apocalyptic number.

79989215 is a deficient number, since it is larger than the sum of its proper divisors (16048705).

79989215 is a wasteful number, since it uses less digits than its factorization.

79989215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8481.

The product of its digits is 408240, while the sum is 50.

The square root of 79989215 is about 8943.6689898497. The cubic root of 79989215 is about 430.8675741544.

The spelling of 79989215 in words is "seventy-nine million, nine hundred eighty-nine thousand, two hundred fifteen".