79619904 has 336 divisors, whose sum is σ = 295859200. Its totient is φ = 20321280.

The previous prime is 79619887. The next prime is 79619921. The reversal of 79619904 is 40991697.

It is an interprime number because it is at equal distance from previous prime (79619887) and next prime (79619921).

It is a tau number, because it is divible by the number of its divisors (336).

It is a super-2 number, since 2×79619904² = 12678658225938432, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 79619904.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2568369 + ... + 2568399.

Almost surely, 2^79619904 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 79619904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (147929600).

79619904 is an abundant number, since it is smaller than the sum of its proper divisors (216239296).

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

79619904 is a wasteful number, since it uses less digits than its factorization.

79619904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83 (or 56 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 45.

The square root of 79619904 is about 8922.9985991257. The cubic root of 79619904 is about 430.2034443825.

The spelling of 79619904 in words is "seventy-nine million, six hundred nineteen thousand, nine hundred four".