389457613 has 2 divisors, whose sum is σ = 389457614. Its totient is φ = 389457612.

The previous prime is 389457587. The next prime is 389457683. The reversal of 389457613 is 316754983.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 378613764 + 10843849 = 19458^2 + 3293^2 .

It is an emirp because it is prime and its reverse (316754983) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 389457613 - 2¹⁷ = 389326541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (389457683) 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, 194728806 + 194728807.

It is an arithmetic number, because the mean of its divisors is an integer number (194728807).

Almost surely, 2^389457613 is an apocalyptic number.

It is an amenable number.

389457613 is a deficient number, since it is larger than the sum of its proper divisors (1).

389457613 is an equidigital number, since it uses as much as digits as its factorization.

389457613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 544320, while the sum is 46.

The square root of 389457613 is about 19734.6804635900. The cubic root of 389457613 is about 730.2755030674.

The spelling of 389457613 in words is "three hundred eighty-nine million, four hundred fifty-seven thousand, six hundred thirteen".