79904 has 24 divisors (see below), whose sum is σ = 172368. Its totient is φ = 36160.

The previous prime is 79903. The next prime is 79907. The reversal of 79904 is 40997.

It is not an unprimeable number, because it can be changed into a prime (79901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 239 + ... + 465.

It is an arithmetic number, because the mean of its divisors is an integer number (7182).

2⁷⁹⁹⁰⁴ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 79904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86184).

79904 is an abundant number, since it is smaller than the sum of its proper divisors (92464).

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

79904 is a wasteful number, since it uses less digits than its factorization.

79904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248 (or 240 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 29.

The square root of 79904 is about 282.6729559049. The cubic root of 79904 is about 43.0714514243.

The spelling of 79904 in words is "seventy-nine thousand, nine hundred four".