389259457 has 2 divisors, whose sum is σ = 389259458. Its totient is φ = 389259456.

The previous prime is 389259391. The next prime is 389259509. The reversal of 389259457 is 754952983.

It is an a-pointer prime, because the next prime (389259509) can be obtained adding 389259457 to its sum of digits (52).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 378263601 + 10995856 = 19449^2 + 3316^2 .

It is a cyclic number.

It is not a de Polignac number, because 389259457 - 2⁷ = 389259329 is a prime.

It is not a weakly prime, because it can be changed into another prime (389256457) 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 as a sum of consecutive naturals, namely, 194629728 + 194629729.

It is an arithmetic number, because the mean of its divisors is an integer number (194629729).

Almost surely, 2^389259457 is an apocalyptic number.

It is an amenable number.

389259457 is a deficient number, since it is larger than the sum of its proper divisors (1).

389259457 is an equidigital number, since it uses as much as digits as its factorization.

389259457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2721600, while the sum is 52.

The square root of 389259457 is about 19729.6593229584. The cubic root of 389259457 is about 730.1516273513.

The spelling of 389259457 in words is "three hundred eighty-nine million, two hundred fifty-nine thousand, four hundred fifty-seven".