79904782 has 4 divisors (see below), whose sum is σ = 119857176. Its totient is φ = 39952390.

The previous prime is 79904779. The next prime is 79904789. The reversal of 79904782 is 28740997.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 28740997 = 1321 ⋅21757.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79904789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19976194 + ... + 19976197.

It is an arithmetic number, because the mean of its divisors is an integer number (29964294).

Almost surely, 2^79904782 is an apocalyptic number.

79904782 is a deficient number, since it is larger than the sum of its proper divisors (39952394).

79904782 is a wasteful number, since it uses less digits than its factorization.

79904782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39952393.

The product of its (nonzero) digits is 254016, while the sum is 46.

The square root of 79904782 is about 8938.9474771922. The cubic root of 79904782 is about 430.7159193363.

The spelling of 79904782 in words is "seventy-nine million, nine hundred four thousand, seven hundred eighty-two".