872189412 has 48 divisors (see below), whose sum is σ = 2077125120. Its totient is φ = 284747008.

The previous prime is 872189401. The next prime is 872189449. The reversal of 872189412 is 214981278.

It is an alternating number because its digits alternate between even and odd.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 605389 + ... + 606827.

It is an arithmetic number, because the mean of its divisors is an integer number (43273440).

Almost surely, 2^872189412 is an apocalyptic number.

It is an amenable number.

872189412 is an abundant number, since it is smaller than the sum of its proper divisors (1204935708).

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

872189412 is a wasteful number, since it uses less digits than its factorization.

872189412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2452 (or 2450 counting only the distinct ones).

The product of its digits is 64512, while the sum is 42.

The square root of 872189412 is about 29532.8530961707. The cubic root of 872189412 is about 955.4404050433.

The spelling of 872189412 in words is "eight hundred seventy-two million, one hundred eighty-nine thousand, four hundred twelve".