389385907 has 2 divisors, whose sum is σ = 389385908. Its totient is φ = 389385906.

The previous prime is 389385877. The next prime is 389385949. The reversal of 389385907 is 709583983.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 389385907 - 2²³ = 380997299 is a prime.

It is not a weakly prime, because it can be changed into another prime (389380907) 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, 194692953 + 194692954.

It is an arithmetic number, because the mean of its divisors is an integer number (194692954).

Almost surely, 2^389385907 is an apocalyptic number.

389385907 is a deficient number, since it is larger than the sum of its proper divisors (1).

389385907 is an equidigital number, since it uses as much as digits as its factorization.

389385907 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1632960, while the sum is 52.

The square root of 389385907 is about 19732.8636289820. The cubic root of 389385907 is about 730.2306814594.

The spelling of 389385907 in words is "three hundred eighty-nine million, three hundred eighty-five thousand, nine hundred seven".