389939 has 4 divisors (see below), whose sum is σ = 425400. Its totient is φ = 354480.

The previous prime is 389927. The next prime is 389941. The reversal of 389939 is 939983.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 939983 = 11 ⋅85453.

It is a cyclic number.

It is not a de Polignac number, because 389939 - 2⁴ = 389923 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 389896 and 389905.

It is not an unprimeable number, because it can be changed into a prime (389989) 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, 17714 + ... + 17735.

It is an arithmetic number, because the mean of its divisors is an integer number (106350).

2³⁸⁹⁹³⁹ is an apocalyptic number.

389939 is a deficient number, since it is larger than the sum of its proper divisors (35461).

389939 is a wasteful number, since it uses less digits than its factorization.

389939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35460.

The product of its digits is 52488, while the sum is 41.

The square root of 389939 is about 624.4509588430. The cubic root of 389939 is about 73.0576263560.

The spelling of 389939 in words is "three hundred eighty-nine thousand, nine hundred thirty-nine".