79970140 has 48 divisors (see below), whose sum is σ = 171763200. Its totient is φ = 31268160.

The previous prime is 79970119. The next prime is 79970179. The reversal of 79970140 is 4107997.

It is a self number, because there is not a number n which added to its sum of digits gives 79970140.

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, 282439 + ... + 282721.

It is an arithmetic number, because the mean of its divisors is an integer number (3578400).

Almost surely, 2^79970140 is an apocalyptic number.

It is an amenable number.

79970140 is an abundant number, since it is smaller than the sum of its proper divisors (91793060).

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

79970140 is a wasteful number, since it uses less digits than its factorization.

79970140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 562 (or 560 counting only the distinct ones).

The product of its (nonzero) digits is 15876, while the sum is 37.

The square root of 79970140 is about 8942.6025294653. The cubic root of 79970140 is about 430.8333218185.

The spelling of 79970140 in words is "seventy-nine million, nine hundred seventy thousand, one hundred forty".