389823 has 16 divisors (see below), whose sum is σ = 625920. Its totient is φ = 210816.

The previous prime is 389819. The next prime is 389839. The reversal of 389823 is 328983.

It is not a de Polignac number, because 389823 - 2² = 389819 is a prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 389823.

It is not an unprimeable number, because it can be changed into a prime (389023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90 + ... + 887.

It is an arithmetic number, because the mean of its divisors is an integer number (39120).

2³⁸⁹⁸²³ is an apocalyptic number.

389823 is a deficient number, since it is larger than the sum of its proper divisors (236097).

389823 is a wasteful number, since it uses less digits than its factorization.

389823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1006.

The product of its digits is 10368, while the sum is 33.

The square root of 389823 is about 624.3580703411. The cubic root of 389823 is about 73.0503811842.

The spelling of 389823 in words is "three hundred eighty-nine thousand, eight hundred twenty-three".