79819776 has 88 divisors (see below), whose sum is σ = 236469440. Its totient is φ = 26597376.

The previous prime is 79819769. The next prime is 79819799. The reversal of 79819776 is 67791897.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26205 + ... + 29091.

Almost surely, 2^79819776 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 79819776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118234720).

79819776 is an abundant number, since it is smaller than the sum of its proper divisors (156649664).

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

79819776 is a wasteful number, since it uses less digits than its factorization.

79819776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2916 (or 2892 counting only the distinct ones).

The product of its digits is 1333584, while the sum is 54.

The square root of 79819776 is about 8934.1914015763. The cubic root of 79819776 is about 430.5631273597.

The spelling of 79819776 in words is "seventy-nine million, eight hundred nineteen thousand, seven hundred seventy-six".