979915 has 8 divisors (see below), whose sum is σ = 1227168. Its totient is φ = 749760.

The previous prime is 979907. The next prime is 979919. The reversal of 979915 is 519979.

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

It is not a de Polignac number, because 979915 - 2³ = 979907 is a prime.

It is an Ulam number.

It is a Duffinian number.

979915 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (979919) 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, 4146 + ... + 4375.

It is an arithmetic number, because the mean of its divisors is an integer number (153396).

2⁹⁷⁹⁹¹⁵ is an apocalyptic number.

979915 is a deficient number, since it is larger than the sum of its proper divisors (247253).

979915 is a wasteful number, since it uses less digits than its factorization.

979915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8549.

The product of its digits is 25515, while the sum is 40.

The square root of 979915 is about 989.9065612471. The cubic root of 979915 is about 99.3259670028.

The spelling of 979915 in words is "nine hundred seventy-nine thousand, nine hundred fifteen".