389543039 has 2 divisors, whose sum is σ = 389543040. Its totient is φ = 389543038.

The previous prime is 389543027. The next prime is 389543053. The reversal of 389543039 is 930345983.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 389543039 - 2²⁸ = 121107583 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (389543059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194771519 + 194771520.

It is an arithmetic number, because the mean of its divisors is an integer number (194771520).

Almost surely, 2^389543039 is an apocalyptic number.

389543039 is a deficient number, since it is larger than the sum of its proper divisors (1).

389543039 is an equidigital number, since it uses as much as digits as its factorization.

389543039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 349920, while the sum is 44.

The square root of 389543039 is about 19736.8447072981. The cubic root of 389543039 is about 730.3288935198.

The spelling of 389543039 in words is "three hundred eighty-nine million, five hundred forty-three thousand, thirty-nine".