389686 has 8 divisors (see below), whose sum is σ = 637704. Its totient is φ = 177120.

The previous prime is 389663. The next prime is 389687. The reversal of 389686 is 686983.

389686 is nontrivially palindromic in base 14.

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

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 3 ways as a sum of consecutive naturals, for example, 8835 + ... + 8878.

It is an arithmetic number, because the mean of its divisors is an integer number (79713).

2³⁸⁹⁶⁸⁶ is an apocalyptic number.

389686 is a deficient number, since it is larger than the sum of its proper divisors (248018).

389686 is a wasteful number, since it uses less digits than its factorization.

389686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17726.

The product of its digits is 62208, while the sum is 40.

The square root of 389686 is about 624.2483480154. The cubic root of 389686 is about 73.0418225351.

The spelling of 389686 in words is "three hundred eighty-nine thousand, six hundred eighty-six".