79979904 has 48 divisors (see below), whose sum is σ = 230153820. Its totient is φ = 26659584.

The previous prime is 79979899. The next prime is 79979909. The reversal of 79979904 is 40997997.

It is an interprime number because it is at equal distance from previous prime (79979899) and next prime (79979909).

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79979909) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 33562 + ... + 35865.

Almost surely, 2^79979904 is an apocalyptic number.

It is an amenable number.

79979904 is an abundant number, since it is smaller than the sum of its proper divisors (150173916).

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

79979904 is a wasteful number, since it uses less digits than its factorization.

79979904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69447 (or 69432 counting only the distinct ones).

The product of its (nonzero) digits is 1285956, while the sum is 54.

The square root of 79979904 is about 8943.1484388888. The cubic root of 79979904 is about 430.8508553853.

The spelling of 79979904 in words is "seventy-nine million, nine hundred seventy-nine thousand, nine hundred four".