7979964 has 12 divisors (see below), whose sum is σ = 18619944. Its totient is φ = 2659984.

The previous prime is 7979957. The next prime is 7979969. The reversal of 7979964 is 4699797.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7979969) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 332487 + ... + 332510.

It is an arithmetic number, because the mean of its divisors is an integer number (1551662).

Almost surely, 2^7979964 is an apocalyptic number.

It is an amenable number.

7979964 is an abundant number, since it is smaller than the sum of its proper divisors (10639980).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7979964 is a wasteful number, since it uses less digits than its factorization.

7979964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 665004 (or 665002 counting only the distinct ones).

The product of its digits is 857304, while the sum is 51.

The square root of 7979964 is about 2824.8830064270. The cubic root of 7979964 is about 199.8328937497.

The spelling of 7979964 in words is "seven million, nine hundred seventy-nine thousand, nine hundred sixty-four".