79764894 has 72 divisors (see below), whose sum is σ = 193827816. Its totient is φ = 23680800.

The previous prime is 79764857. The next prime is 79764917. The reversal of 79764894 is 49846797.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 79764894.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 115089 + ... + 115779.

It is an arithmetic number, because the mean of its divisors is an integer number (2692053).

Almost surely, 2^79764894 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 79764894, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96913908).

79764894 is an abundant number, since it is smaller than the sum of its proper divisors (114062922).

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

79764894 is a wasteful number, since it uses less digits than its factorization.

79764894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 774 (or 760 counting only the distinct ones).

The product of its digits is 3048192, while the sum is 54.

The square root of 79764894 is about 8931.1194147206. The cubic root of 79764894 is about 430.4644234016.

The spelling of 79764894 in words is "seventy-nine million, seven hundred sixty-four thousand, eight hundred ninety-four".