8390195872 has 24 divisors (see below), whose sum is σ = 16521122772. Its totient is φ = 4194355200.

The previous prime is 8390195867. The next prime is 8390195881. The reversal of 8390195872 is 2785910938.

It can be written as a sum of positive squares in 2 ways, for example, as 7891834896 + 498360976 = 88836^2 + 22324^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 190672 + ... + 230512.

Almost surely, 2^8390195872 is an apocalyptic number.

It is an amenable number.

8390195872 is a deficient number, since it is larger than the sum of its proper divisors (8130926900).

8390195872 is a wasteful number, since it uses less digits than its factorization.

8390195872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46432 (or 46424 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 52.

The square root of 8390195872 is about 91598.0123801821. The cubic root of 8390195872 is about 2032.0015422519.

The spelling of 8390195872 in words is "eight billion, three hundred ninety million, one hundred ninety-five thousand, eight hundred seventy-two".