389788013 has 2 divisors, whose sum is σ = 389788014. Its totient is φ = 389788012.

The previous prime is 389787973. The next prime is 389788027. The reversal of 389788013 is 310887983.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 295736809 + 94051204 = 17197^2 + 9698^2 .

It is a cyclic number.

It is not a de Polignac number, because 389788013 - 2¹⁰ = 389786989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (389788213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194894006 + 194894007.

It is an arithmetic number, because the mean of its divisors is an integer number (194894007).

Almost surely, 2^389788013 is an apocalyptic number.

It is an amenable number.

389788013 is a deficient number, since it is larger than the sum of its proper divisors (1).

389788013 is an equidigital number, since it uses as much as digits as its factorization.

389788013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 290304, while the sum is 47.

The square root of 389788013 is about 19743.0497390854. The cubic root of 389788013 is about 730.4819567085.

The spelling of 389788013 in words is "three hundred eighty-nine million, seven hundred eighty-eight thousand, thirteen".