79887384 has 80 divisors (see below), whose sum is σ = 225945720. Its totient is φ = 26369280.

The previous prime is 79887361. The next prime is 79887391. The reversal of 79887384 is 48378897.

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

It is a self number, because there is not a number n which added to its sum of digits gives 79887384.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 72679 + ... + 73769.

Almost surely, 2^79887384 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 79887384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112972860).

79887384 is an abundant number, since it is smaller than the sum of its proper divisors (146058336).

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

79887384 is a wasteful number, since it uses less digits than its factorization.

79887384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1222 (or 1209 counting only the distinct ones).

The product of its digits is 2709504, while the sum is 54.

The square root of 79887384 is about 8937.9742671368. The cubic root of 79887384 is about 430.6846565452.

The spelling of 79887384 in words is "seventy-nine million, eight hundred eighty-seven thousand, three hundred eighty-four".