79964 has 6 divisors (see below), whose sum is σ = 139944. Its totient is φ = 39980.

The previous prime is 79943. The next prime is 79967. The reversal of 79964 is 46997.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9992 + ... + 9999.

It is an arithmetic number, because the mean of its divisors is an integer number (23324).

2⁷⁹⁹⁶⁴ is an apocalyptic number.

It is an amenable number.

79964 is a deficient number, since it is larger than the sum of its proper divisors (59980).

79964 is a wasteful number, since it uses less digits than its factorization.

79964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19995 (or 19993 counting only the distinct ones).

The product of its digits is 13608, while the sum is 35.

The square root of 79964 is about 282.7790657032. The cubic root of 79964 is about 43.0822295268.

It can be divided in two parts, 7996 and 4, that added together give a cube (8000 = 20³).

The spelling of 79964 in words is "seventy-nine thousand, nine hundred sixty-four".