8539923872 has 24 divisors (see below), whose sum is σ = 17088601572. Its totient is φ = 4199961600.

The previous prime is 8539923869. The next prime is 8539923893. The reversal of 8539923872 is 2783299358.

It can be written as a sum of positive squares in 2 ways, for example, as 8347380496 + 192543376 = 91364^2 + 13876^2 .

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, 2185529 + ... + 2189432.

Almost surely, 2^8539923872 is an apocalyptic number.

It is an amenable number.

8539923872 is an abundant number, since it is smaller than the sum of its proper divisors (8548677700).

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

8539923872 is a wasteful number, since it uses less digits than its factorization.

8539923872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4375032 (or 4375024 counting only the distinct ones).

The product of its digits is 6531840, while the sum is 56.

The square root of 8539923872 is about 92411.7085222430. The cubic root of 8539923872 is about 2044.0177668323.

The spelling of 8539923872 in words is "eight billion, five hundred thirty-nine million, nine hundred twenty-three thousand, eight hundred seventy-two".