389986862717 has 2 divisors, whose sum is σ = 389986862718. Its totient is φ = 389986862716.

The previous prime is 389986862653. The next prime is 389986862851. The reversal of 389986862717 is 717268689983.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 379442448121 + 10544414596 = 615989^2 + 102686^2 .

It is a cyclic number.

It is not a de Polignac number, because 389986862717 - 2⁶ = 389986862653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (389986862017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194993431358 + 194993431359.

It is an arithmetic number, because the mean of its divisors is an integer number (194993431359).

Almost surely, 2^389986862717 is an apocalyptic number.

It is an amenable number.

389986862717 is a deficient number, since it is larger than the sum of its proper divisors (1).

389986862717 is an equidigital number, since it uses as much as digits as its factorization.

389986862717 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 438939648, while the sum is 74.

The spelling of 389986862717 in words is "three hundred eighty-nine billion, nine hundred eighty-six million, eight hundred sixty-two thousand, seven hundred seventeen".