389656 has 16 divisors (see below), whose sum is σ = 745200. Its totient is φ = 190944.

The previous prime is 389651. The next prime is 389659. The reversal of 389656 is 656983.

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

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 (389651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36 + ... + 883.

It is an arithmetic number, because the mean of its divisors is an integer number (46575).

389656 is a Friedman number, since it can be written as 5^8-963-6, using all its digits and the basic arithmetic operations.

2³⁸⁹⁶⁵⁶ is an apocalyptic number.

It is an amenable number.

389656 is a deficient number, since it is larger than the sum of its proper divisors (355544).

389656 is a wasteful number, since it uses less digits than its factorization.

389656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 978 (or 974 counting only the distinct ones).

The product of its digits is 38880, while the sum is 37.

The square root of 389656 is about 624.2243186548. The cubic root of 389656 is about 73.0399481106.

The spelling of 389656 in words is "three hundred eighty-nine thousand, six hundred fifty-six".