79959420 has 48 divisors (see below), whose sum is σ = 248764320. Its totient is φ = 21322368.

The previous prime is 79959343. The next prime is 79959437. The reversal of 79959420 is 2495997.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73497 + ... + 74576.

It is an arithmetic number, because the mean of its divisors is an integer number (5182590).

Almost surely, 2^79959420 is an apocalyptic number.

It is an amenable number.

79959420 is an abundant number, since it is smaller than the sum of its proper divisors (168804900).

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

79959420 is a wasteful number, since it uses less digits than its factorization.

79959420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148091 (or 148083 counting only the distinct ones).

The product of its (nonzero) digits is 204120, while the sum is 45.

The square root of 79959420 is about 8942.0031312900. The cubic root of 79959420 is about 430.8140698844.

The spelling of 79959420 in words is "seventy-nine million, nine hundred fifty-nine thousand, four hundred twenty".