389287663 has 2 divisors, whose sum is σ = 389287664. Its totient is φ = 389287662.

The previous prime is 389287649. The next prime is 389287733. The reversal of 389287663 is 366782983.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 389287663 - 2⁵ = 389287631 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 389287663.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (389287163) 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, 194643831 + 194643832.

It is an arithmetic number, because the mean of its divisors is an integer number (194643832).

Almost surely, 2^389287663 is an apocalyptic number.

389287663 is a deficient number, since it is larger than the sum of its proper divisors (1).

389287663 is an equidigital number, since it uses as much as digits as its factorization.

389287663 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2612736, while the sum is 52.

The square root of 389287663 is about 19730.3741221498. The cubic root of 389287663 is about 730.1692626834.

The spelling of 389287663 in words is "three hundred eighty-nine million, two hundred eighty-seven thousand, six hundred sixty-three".