389685 has 16 divisors (see below), whose sum is σ = 633024. Its totient is φ = 204672.

The previous prime is 389663. The next prime is 389687. The reversal of 389685 is 586983.

It is not a de Polignac number, because 389685 - 2⁶ = 389621 is a prime.

It is a nialpdrome in base 5.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389687) 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 in 15 ways as a sum of consecutive naturals, for example, 1089 + ... + 1401.

It is an arithmetic number, because the mean of its divisors is an integer number (39564).

2³⁸⁹⁶⁸⁵ is an apocalyptic number.

It is an amenable number.

389685 is a deficient number, since it is larger than the sum of its proper divisors (243339).

389685 is a wasteful number, since it uses less digits than its factorization.

389685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404.

The product of its digits is 51840, while the sum is 39.

The square root of 389685 is about 624.2475470516. The cubic root of 389685 is about 73.0417600558.

The spelling of 389685 in words is "three hundred eighty-nine thousand, six hundred eighty-five".