7898979 has 16 divisors (see below), whose sum is σ = 11687040. Its totient is φ = 4704960.

The previous prime is 7898939. The next prime is 7898981. The reversal of 7898979 is 9798987.

It is a happy number.

7898979 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 7898979 - 2¹² = 7894883 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7898909) 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, 82 + ... + 3975.

It is an arithmetic number, because the mean of its divisors is an integer number (730440).

Almost surely, 2^7898979 is an apocalyptic number.

7898979 is a deficient number, since it is larger than the sum of its proper divisors (3788061).

7898979 is a wasteful number, since it uses less digits than its factorization.

7898979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4130.

The product of its digits is 2286144, while the sum is 57.

The square root of 7898979 is about 2810.5122308932. The cubic root of 7898979 is about 199.1545897764.

The spelling of 7898979 in words is "seven million, eight hundred ninety-eight thousand, nine hundred seventy-nine".