389323439 has 2 divisors, whose sum is σ = 389323440. Its totient is φ = 389323438.

The previous prime is 389323427. The next prime is 389323481. The reversal of 389323439 is 934323983.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 389323439 - 2¹⁶ = 389257903 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 389323439.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (389323499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194661719 + 194661720.

It is an arithmetic number, because the mean of its divisors is an integer number (194661720).

Almost surely, 2^389323439 is an apocalyptic number.

389323439 is a deficient number, since it is larger than the sum of its proper divisors (1).

389323439 is an equidigital number, since it uses as much as digits as its factorization.

389323439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 419904, while the sum is 44.

The square root of 389323439 is about 19731.2807237645. The cubic root of 389323439 is about 730.1916298066.

The spelling of 389323439 in words is "three hundred eighty-nine million, three hundred twenty-three thousand, four hundred thirty-nine".