875989 has 4 divisors (see below), whose sum is σ = 878220. Its totient is φ = 873760.

The previous prime is 875983. The next prime is 876011. The reversal of 875989 is 989578.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 989578 = 2 ⋅494789.

It can be written as a sum of positive squares in 2 ways, for example, as 680625 + 195364 = 825^2 + 442^2 .

It is a cyclic number.

It is not a de Polignac number, because 875989 - 2³ = 875981 is a prime.

It is a Duffinian number.

875989 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (875981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 352 + ... + 1369.

It is an arithmetic number, because the mean of its divisors is an integer number (219555).

2⁸⁷⁵⁹⁸⁹ is an apocalyptic number.

It is an amenable number.

875989 is a deficient number, since it is larger than the sum of its proper divisors (2231).

875989 is a wasteful number, since it uses less digits than its factorization.

875989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2230.

The product of its digits is 181440, while the sum is 46.

The square root of 875989 is about 935.9428401350. The cubic root of 875989 is about 95.6825815500.

The spelling of 875989 in words is "eight hundred seventy-five thousand, nine hundred eighty-nine".