389986 has 8 divisors (see below), whose sum is σ = 588240. Its totient is φ = 193908.

The previous prime is 389981. The next prime is 389989. The reversal of 389986 is 689983.

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

It is not an unprimeable number, because it can be changed into a prime (389981) 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, 25 + ... + 883.

It is an arithmetic number, because the mean of its divisors is an integer number (73530).

2³⁸⁹⁹⁸⁶ is an apocalyptic number.

389986 is a deficient number, since it is larger than the sum of its proper divisors (198254).

389986 is a wasteful number, since it uses less digits than its factorization.

389986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1088.

The product of its digits is 93312, while the sum is 43.

The square root of 389986 is about 624.4885907685. The cubic root of 389986 is about 73.0605614908.

The spelling of 389986 in words is "three hundred eighty-nine thousand, nine hundred eighty-six".