79899456 has 224 divisors, whose sum is σ = 276514560. Its totient is φ = 19759104.

The previous prime is 79899419. The next prime is 79899467. The reversal of 79899456 is 65499897.

It is a tau number, because it is divible by the number of its divisors (224).

It is a junction number, because it is equal to n+sod(n) for n = 79899396 and 79899405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 296890 + ... + 297158.

It is an arithmetic number, because the mean of its divisors is an integer number (1234440).

Almost surely, 2^79899456 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 79899456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (138257280).

79899456 is an abundant number, since it is smaller than the sum of its proper divisors (196615104).

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

79899456 is a wasteful number, since it uses less digits than its factorization.

79899456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321 (or 311 counting only the distinct ones).

The product of its digits is 4898880, while the sum is 57.

The square root of 79899456 is about 8938.6495624339. The cubic root of 79899456 is about 430.7063494294.

The spelling of 79899456 in words is "seventy-nine million, eight hundred ninety-nine thousand, four hundred fifty-six".