79984428 has 12 divisors (see below), whose sum is σ = 186630360. Its totient is φ = 26661472.

The previous prime is 79984423. The next prime is 79984447. The reversal of 79984428 is 82448997.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (79984423) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 3332673 + ... + 3332696.

It is an arithmetic number, because the mean of its divisors is an integer number (15552530).

Almost surely, 2^79984428 is an apocalyptic number.

It is an amenable number.

79984428 is an abundant number, since it is smaller than the sum of its proper divisors (106645932).

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

79984428 is a wasteful number, since it uses less digits than its factorization.

79984428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6665376 (or 6665374 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 51.

The square root of 79984428 is about 8943.4013663706. The cubic root of 79984428 is about 430.8589788114.

The spelling of 79984428 in words is "seventy-nine million, nine hundred eighty-four thousand, four hundred twenty-eight".