79870012 has 24 divisors (see below), whose sum is σ = 152772480. Its totient is φ = 36372480.

The previous prime is 79870003. The next prime is 79870019. The reversal of 79870012 is 21007897.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a self number, because there is not a number n which added to its sum of digits gives 79870012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79870019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16837 + ... + 21052.

It is an arithmetic number, because the mean of its divisors is an integer number (6365520).

Almost surely, 2^79870012 is an apocalyptic number.

It is an amenable number.

79870012 is a deficient number, since it is larger than the sum of its proper divisors (72902468).

79870012 is a wasteful number, since it uses less digits than its factorization.

79870012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37941 (or 37939 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 34.

The square root of 79870012 is about 8937.0024057287. The cubic root of 79870012 is about 430.6534359450.

The spelling of 79870012 in words is "seventy-nine million, eight hundred seventy thousand, twelve".