389185 has 8 divisors (see below), whose sum is σ = 470376. Its totient is φ = 309120.

The previous prime is 389173. The next prime is 389189. The reversal of 389185 is 581983.

It can be written as a sum of positive squares in 4 ways, for example, as 20736 + 368449 = 144^2 + 607^2 .

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

It is not a de Polignac number, because 389185 - 2⁷ = 389057 is a prime.

It is a Duffinian number.

389185 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 389185.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389189) 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, 1245 + ... + 1525.

It is an arithmetic number, because the mean of its divisors is an integer number (58797).

2³⁸⁹¹⁸⁵ is an apocalyptic number.

It is an amenable number.

389185 is a deficient number, since it is larger than the sum of its proper divisors (81191).

389185 is a wasteful number, since it uses less digits than its factorization.

389185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 563.

The product of its digits is 8640, while the sum is 34.

The square root of 389185 is about 623.8469363554. The cubic root of 389185 is about 73.0105070258.

It can be divided in two parts, 38 and 9185, that multiplied together give a triangular number (349030 = T₈₃₅).

The spelling of 389185 in words is "three hundred eighty-nine thousand, one hundred eighty-five".