389738863 has 2 divisors, whose sum is σ = 389738864. Its totient is φ = 389738862.

The previous prime is 389738819. The next prime is 389738873. The reversal of 389738863 is 368837983.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 389738863 - 2⁹ = 389738351 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (389738803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194869431 + 194869432.

It is an arithmetic number, because the mean of its divisors is an integer number (194869432).

Almost surely, 2^389738863 is an apocalyptic number.

389738863 is a deficient number, since it is larger than the sum of its proper divisors (1).

389738863 is an equidigital number, since it uses as much as digits as its factorization.

389738863 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5225472, while the sum is 55.

The square root of 389738863 is about 19741.8049580073. The cubic root of 389738863 is about 730.4512522434.

The spelling of 389738863 in words is "three hundred eighty-nine million, seven hundred thirty-eight thousand, eight hundred sixty-three".