850889 has 16 divisors (see below), whose sum is σ = 989520. Its totient is φ = 725760.

The previous prime is 850879. The next prime is 850891. The reversal of 850889 is 988058.

It can be written as a sum of positive squares in 8 ways, for example, as 55225 + 795664 = 235^2 + 892^2 .

It is a cyclic number.

It is not a de Polignac number, because 850889 - 2¹⁶ = 785353 is a prime.

It is an Ulam number.

It is a Duffinian number.

850889 is a Rhonda number in base 9.

It is not an unprimeable number, because it can be changed into a prime (850849) 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 15 ways as a sum of consecutive naturals, for example, 13919 + ... + 13979.

It is an arithmetic number, because the mean of its divisors is an integer number (61845).

2⁸⁵⁰⁸⁸⁹ is an apocalyptic number.

It is an amenable number.

850889 is a deficient number, since it is larger than the sum of its proper divisors (138631).

850889 is a wasteful number, since it uses less digits than its factorization.

850889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140.

The product of its (nonzero) digits is 23040, while the sum is 38.

The square root of 850889 is about 922.4364476754. The cubic root of 850889 is about 94.7598365832.

The spelling of 850889 in words is "eight hundred fifty thousand, eight hundred eighty-nine".