872188994 has 8 divisors (see below), whose sum is σ = 1308845628. Its totient is φ = 435907120.

The previous prime is 872188987. The next prime is 872189009. The reversal of 872188994 is 499881278.

872188994 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 839550625 + 32638369 = 28975^2 + 5713^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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, 87797 + ... + 97224.

Almost surely, 2^872188994 is an apocalyptic number.

872188994 is a deficient number, since it is larger than the sum of its proper divisors (436656634).

872188994 is a wasteful number, since it uses less digits than its factorization.

872188994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187380.

The product of its digits is 2322432, while the sum is 56.

The square root of 872188994 is about 29532.8460193054. The cubic root of 872188994 is about 955.4402524105.

The spelling of 872188994 in words is "eight hundred seventy-two million, one hundred eighty-eight thousand, nine hundred ninety-four".