872891913 has 8 divisors (see below), whose sum is σ = 1164052800. Its totient is φ = 581829488.

The previous prime is 872891839. The next prime is 872891941. The reversal of 872891913 is 319198278.

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

It is a cyclic number.

It is not a de Polignac number, because 872891913 - 2¹⁶ = 872826377 is a prime.

It is not an unprimeable number, because it can be changed into a prime (872891413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 573 + ... + 41786.

It is an arithmetic number, because the mean of its divisors is an integer number (145506600).

Almost surely, 2^872891913 is an apocalyptic number.

It is an amenable number.

872891913 is a deficient number, since it is larger than the sum of its proper divisors (291160887).

872891913 is a wasteful number, since it uses less digits than its factorization.

872891913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49231.

The product of its digits is 217728, while the sum is 48.

The square root of 872891913 is about 29544.7442534201. The cubic root of 872891913 is about 955.6968545817.

The spelling of 872891913 in words is "eight hundred seventy-two million, eight hundred ninety-one thousand, nine hundred thirteen".