872859 has 8 divisors (see below), whose sum is σ = 1253392. Its totient is φ = 537120.

The previous prime is 872843. The next prime is 872863. The reversal of 872859 is 958278.

872859 is nontrivially palindromic in base 12.

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

It is not a de Polignac number, because 872859 - 2⁴ = 872843 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 22381 = 872859 / (8 + 7 + 2 + 8 + 5 + 9).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (872159) 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, 11152 + ... + 11229.

It is an arithmetic number, because the mean of its divisors is an integer number (156674).

2⁸⁷²⁸⁵⁹ is an apocalyptic number.

872859 is a deficient number, since it is larger than the sum of its proper divisors (380533).

872859 is a wasteful number, since it uses less digits than its factorization.

872859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22397.

The product of its digits is 40320, while the sum is 39.

The square root of 872859 is about 934.2692331443. The cubic root of 872859 is about 95.5684842691.

The spelling of 872859 in words is "eight hundred seventy-two thousand, eight hundred fifty-nine".