845889 has 8 divisors (see below), whose sum is σ = 1230432. Its totient is φ = 512640.

The previous prime is 845881. The next prime is 845893. The reversal of 845889 is 988548.

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

It is not a de Polignac number, because 845889 - 2³ = 845881 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 845889.

It is not an unprimeable number, because it can be changed into a prime (845881) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12784 + ... + 12849.

It is an arithmetic number, because the mean of its divisors is an integer number (153804).

2⁸⁴⁵⁸⁸⁹ is an apocalyptic number.

It is an amenable number.

845889 is a deficient number, since it is larger than the sum of its proper divisors (384543).

845889 is a wasteful number, since it uses less digits than its factorization.

845889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25647.

The product of its digits is 92160, while the sum is 42.

The square root of 845889 is about 919.7222406792. The cubic root of 845889 is about 94.5738623563.

The spelling of 845889 in words is "eight hundred forty-five thousand, eight hundred eighty-nine".