389008427 has 2 divisors, whose sum is σ = 389008428. Its totient is φ = 389008426.

The previous prime is 389008423. The next prime is 389008447. The reversal of 389008427 is 724800983.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 389008427 - 2² = 389008423 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (389008421) 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, 194504213 + 194504214.

It is an arithmetic number, because the mean of its divisors is an integer number (194504214).

Almost surely, 2^389008427 is an apocalyptic number.

389008427 is a deficient number, since it is larger than the sum of its proper divisors (1).

389008427 is an equidigital number, since it uses as much as digits as its factorization.

389008427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96768, while the sum is 41.

The square root of 389008427 is about 19723.2965550894. The cubic root of 389008427 is about 729.9946374786.

The spelling of 389008427 in words is "three hundred eighty-nine million, eight thousand, four hundred twenty-seven".