79871970 has 16 divisors (see below), whose sum is σ = 191692800. Its totient is φ = 21299184.

The previous prime is 79871929. The next prime is 79872019. The reversal of 79871970 is 7917897.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1331170 + ... + 1331229.

It is an arithmetic number, because the mean of its divisors is an integer number (11980800).

Almost surely, 2^79871970 is an apocalyptic number.

79871970 is an abundant number, since it is smaller than the sum of its proper divisors (111820830).

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

79871970 is a wasteful number, since it uses less digits than its factorization.

79871970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2662409.

The product of its (nonzero) digits is 222264, while the sum is 48.

The square root of 79871970 is about 8937.1119496177. Note that the first 3 decimals coincide. The cubic root of 79871970 is about 430.6569550486.

The spelling of 79871970 in words is "seventy-nine million, eight hundred seventy-one thousand, nine hundred seventy".