850189 has 2 divisors, whose sum is σ = 850190. Its totient is φ = 850188.

The previous prime is 850181. The next prime is 850207. The reversal of 850189 is 981058.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 574564 + 275625 = 758^2 + 525^2 .

It is a cyclic number.

It is not a de Polignac number, because 850189 - 2³ = 850181 is a prime.

It is a Chen prime.

It is an alternating number because its digits alternate between even and odd.

850189 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 850189.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (850181) 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 as a sum of consecutive naturals, namely, 425094 + 425095.

It is an arithmetic number, because the mean of its divisors is an integer number (425095).

2⁸⁵⁰¹⁸⁹ is an apocalyptic number.

It is an amenable number.

850189 is a deficient number, since it is larger than the sum of its proper divisors (1).

850189 is an equidigital number, since it uses as much as digits as its factorization.

850189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 31.

The square root of 850189 is about 922.0569396735. The cubic root of 850189 is about 94.7338441276.

The spelling of 850189 in words is "eight hundred fifty thousand, one hundred eighty-nine".