389923 has 2 divisors, whose sum is σ = 389924. Its totient is φ = 389922.

The previous prime is 389911. The next prime is 389927. The reversal of 389923 is 329983.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 389923 - 2⁵ = 389891 is a prime.

It is not a weakly prime, because it can be changed into another prime (389927) 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 as a sum of consecutive naturals, namely, 194961 + 194962.

It is an arithmetic number, because the mean of its divisors is an integer number (194962).

2³⁸⁹⁹²³ is an apocalyptic number.

389923 is a deficient number, since it is larger than the sum of its proper divisors (1).

389923 is an equidigital number, since it uses as much as digits as its factorization.

389923 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11664, while the sum is 34.

The square root of 389923 is about 624.4381474574. The cubic root of 389923 is about 73.0566271074.

The spelling of 389923 in words is "three hundred eighty-nine thousand, nine hundred twenty-three".