79884420 has 96 divisors (see below), whose sum is σ = 278885376. Its totient is φ = 16598400.

The previous prime is 79884419. The next prime is 79884457. The reversal of 79884420 is 2448897.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4026 + ... + 13265.

It is an arithmetic number, because the mean of its divisors is an integer number (2905056).

Almost surely, 2^79884420 is an apocalyptic number.

79884420 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

79884420 is an abundant number, since it is smaller than the sum of its proper divisors (199000956).

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

79884420 is a wasteful number, since it uses less digits than its factorization.

79884420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17321 (or 17319 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 42.

The square root of 79884420 is about 8937.8084562157. The cubic root of 79884420 is about 430.6793300258.

The spelling of 79884420 in words is "seventy-nine million, eight hundred eighty-four thousand, four hundred twenty".