389458687 has 2 divisors, whose sum is σ = 389458688. Its totient is φ = 389458686.

The previous prime is 389458669. The next prime is 389458691. The reversal of 389458687 is 786854983.

It is a strong prime.

It is an emirp because it is prime and its reverse (786854983) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-389458687 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (389458607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194729343 + 194729344.

It is an arithmetic number, because the mean of its divisors is an integer number (194729344).

Almost surely, 2^389458687 is an apocalyptic number.

389458687 is a deficient number, since it is larger than the sum of its proper divisors (1).

389458687 is an equidigital number, since it uses as much as digits as its factorization.

389458687 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11612160, while the sum is 58.

The square root of 389458687 is about 19734.7076745515. The cubic root of 389458687 is about 730.2761743558.

The spelling of 389458687 in words is "three hundred eighty-nine million, four hundred fifty-eight thousand, six hundred eighty-seven".