8315979 has 16 divisors (see below), whose sum is σ = 12714240. Its totient is φ = 4736160.

The previous prime is 8315971. The next prime is 8315987. The reversal of 8315979 is 9795138.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (8315971) and next prime (8315987).

It is not a de Polignac number, because 8315979 - 2³ = 8315971 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8315979.

It is not an unprimeable number, because it can be changed into a prime (8315971) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9252 + ... + 10110.

It is an arithmetic number, because the mean of its divisors is an integer number (794640).

Almost surely, 2^8315979 is an apocalyptic number.

8315979 is a deficient number, since it is larger than the sum of its proper divisors (4398261).

8315979 is a wasteful number, since it uses less digits than its factorization.

8315979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1330.

The product of its digits is 68040, while the sum is 42.

The square root of 8315979 is about 2883.7439206698. The cubic root of 8315979 is about 202.5992319625.

It can be divided in two parts, 83159 and 79, that added together give a palindrome (83238).

The spelling of 8315979 in words is "eight million, three hundred fifteen thousand, nine hundred seventy-nine".