79915 has 8 divisors (see below), whose sum is σ = 104688. Its totient is φ = 58080.

The previous prime is 79907. The next prime is 79939. The reversal of 79915 is 51997.

79915 = T₇₄ + T₇₅ + ... + T₉₅.

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

It is not a de Polignac number, because 79915 - 2³ = 79907 is a prime.

It is a Duffinian number.

79915 is a lucky 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, 672 + ... + 781.

It is an arithmetic number, because the mean of its divisors is an integer number (13086).

2⁷⁹⁹¹⁵ is an apocalyptic number.

79915 is a deficient number, since it is larger than the sum of its proper divisors (24773).

79915 is a wasteful number, since it uses less digits than its factorization.

79915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1469.

The product of its digits is 2835, while the sum is 31.

The square root of 79915 is about 282.6924123495. The cubic root of 79915 is about 43.0734278136.

The spelling of 79915 in words is "seventy-nine thousand, nine hundred fifteen".