389864593 has 2 divisors, whose sum is σ = 389864594. Its totient is φ = 389864592.

The previous prime is 389864581. The next prime is 389864611. The reversal of 389864593 is 395468983.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 285170769 + 104693824 = 16887^2 + 10232^2 .

It is a cyclic number.

It is not a de Polignac number, because 389864593 - 2⁵ = 389864561 is a prime.

It is not a weakly prime, because it can be changed into another prime (389864093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194932296 + 194932297.

It is an arithmetic number, because the mean of its divisors is an integer number (194932297).

Almost surely, 2^389864593 is an apocalyptic number.

It is an amenable number.

389864593 is a deficient number, since it is larger than the sum of its proper divisors (1).

389864593 is an equidigital number, since it uses as much as digits as its factorization.

389864593 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5598720, while the sum is 55.

The square root of 389864593 is about 19744.9890605186. The cubic root of 389864593 is about 730.5297918080.

The spelling of 389864593 in words is "three hundred eighty-nine million, eight hundred sixty-four thousand, five hundred ninety-three".