389572013 has 2 divisors, whose sum is σ = 389572014. Its totient is φ = 389572012.

The previous prime is 389571977. The next prime is 389572061. The reversal of 389572013 is 310275983.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 352763524 + 36808489 = 18782^2 + 6067^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-389572013 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (389572063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194786006 + 194786007.

It is an arithmetic number, because the mean of its divisors is an integer number (194786007).

Almost surely, 2^389572013 is an apocalyptic number.

It is an amenable number.

389572013 is a deficient number, since it is larger than the sum of its proper divisors (1).

389572013 is an equidigital number, since it uses as much as digits as its factorization.

389572013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 389572013 is about 19737.5787015530. The cubic root of 389572013 is about 730.3470002265.

The spelling of 389572013 in words is "three hundred eighty-nine million, five hundred seventy-two thousand, thirteen".