389729647 has 2 divisors, whose sum is σ = 389729648. Its totient is φ = 389729646.

The previous prime is 389729611. The next prime is 389729651. The reversal of 389729647 is 746927983.

It is a strong prime.

It is an emirp because it is prime and its reverse (746927983) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 389729647 - 2⁷ = 389729519 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (389729657) 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, 194864823 + 194864824.

It is an arithmetic number, because the mean of its divisors is an integer number (194864824).

Almost surely, 2^389729647 is an apocalyptic number.

389729647 is a deficient number, since it is larger than the sum of its proper divisors (1).

389729647 is an equidigital number, since it uses as much as digits as its factorization.

389729647 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4572288, while the sum is 55.

The square root of 389729647 is about 19741.5715433194. The cubic root of 389729647 is about 730.4454946345.

The spelling of 389729647 in words is "three hundred eighty-nine million, seven hundred twenty-nine thousand, six hundred forty-seven".