389943 has 12 divisors (see below), whose sum is σ = 578968. Its totient is φ = 252720.

The previous prime is 389941. The next prime is 389947. The reversal of 389943 is 349983.

It is not a de Polignac number, because 389943 - 2¹ = 389941 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 389898 and 389907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 253 + ... + 918.

2³⁸⁹⁹⁴³ is an apocalyptic number.

389943 is a deficient number, since it is larger than the sum of its proper divisors (189025).

389943 is a wasteful number, since it uses less digits than its factorization.

389943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1214 (or 1211 counting only the distinct ones).

The product of its digits is 23328, while the sum is 36.

The square root of 389943 is about 624.4541616484. The cubic root of 389943 is about 73.0578761639.

The spelling of 389943 in words is "three hundred eighty-nine thousand, nine hundred forty-three".