79749984 has 24 divisors (see below), whose sum is σ = 209343960. Its totient is φ = 26583296.

The previous prime is 79749953. The next prime is 79750007. The reversal of 79749984 is 48994797.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 415269 + ... + 415460.

It is an arithmetic number, because the mean of its divisors is an integer number (8722665).

Almost surely, 2^79749984 is an apocalyptic number.

It is an amenable number.

79749984 is an abundant number, since it is smaller than the sum of its proper divisors (129593976).

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

79749984 is a wasteful number, since it uses less digits than its factorization.

79749984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 830742 (or 830734 counting only the distinct ones).

The product of its digits is 4572288, while the sum is 57.

The square root of 79749984 is about 8930.2846539178. The cubic root of 79749984 is about 430.4376003045.

The spelling of 79749984 in words is "seventy-nine million, seven hundred forty-nine thousand, nine hundred eighty-four".