7879915 has 8 divisors (see below), whose sum is σ = 9867168. Its totient is φ = 6029760.

The previous prime is 7879901. The next prime is 7879931. The reversal of 7879915 is 5199787.

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

It is not a de Polignac number, because 7879915 - 2¹³ = 7871723 is a prime.

It is a Duffinian number.

7879915 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, 34146 + ... + 34375.

It is an arithmetic number, because the mean of its divisors is an integer number (1233396).

Almost surely, 2^7879915 is an apocalyptic number.

7879915 is a deficient number, since it is larger than the sum of its proper divisors (1987253).

7879915 is a wasteful number, since it uses less digits than its factorization.

7879915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68549.

The product of its digits is 158760, while the sum is 46.

The square root of 7879915 is about 2807.1186294847. The cubic root of 7879915 is about 198.9942424031.

The spelling of 7879915 in words is "seven million, eight hundred seventy-nine thousand, nine hundred fifteen".