79319856 has 120 divisors (see below), whose sum is σ = 257539072. Its totient is φ = 20592000.

The previous prime is 79319839. The next prime is 79319857. The reversal of 79319856 is 65891397.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79319857) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 39681 + ... + 41631.

Almost surely, 2^79319856 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 79319856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (128769536).

79319856 is an abundant number, since it is smaller than the sum of its proper divisors (178219216).

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

79319856 is a wasteful number, since it uses less digits than its factorization.

79319856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1991 (or 1974 counting only the distinct ones).

The product of its digits is 408240, while the sum is 48.

The square root of 79319856 is about 8906.1695470050. The cubic root of 79319856 is about 429.6623561820.

The spelling of 79319856 in words is "seventy-nine million, three hundred nineteen thousand, eight hundred fifty-six".