389199907 has 2 divisors, whose sum is σ = 389199908. Its totient is φ = 389199906.

The previous prime is 389199883. The next prime is 389199949. The reversal of 389199907 is 709991983.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-389199907 is a prime.

It is not a weakly prime, because it can be changed into another prime (389199977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194599953 + 194599954.

It is an arithmetic number, because the mean of its divisors is an integer number (194599954).

Almost surely, 2^389199907 is an apocalyptic number.

389199907 is a deficient number, since it is larger than the sum of its proper divisors (1).

389199907 is an equidigital number, since it uses as much as digits as its factorization.

389199907 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1102248, while the sum is 55.

The square root of 389199907 is about 19728.1501160144. The cubic root of 389199907 is about 730.1143919067.

The spelling of 389199907 in words is "three hundred eighty-nine million, one hundred ninety-nine thousand, nine hundred seven".