389687 has 2 divisors, whose sum is σ = 389688. Its totient is φ = 389686.

The previous prime is 389663. The next prime is 389699. The reversal of 389687 is 786983.

It is a strong prime.

It is an emirp because it is prime and its reverse (786983) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 389687 - 2¹² = 385591 is a prime.

It is a Chen prime.

It is a nialpdrome in base 5.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (389287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194843 + 194844.

It is an arithmetic number, because the mean of its divisors is an integer number (194844).

2³⁸⁹⁶⁸⁷ is an apocalyptic number.

389687 is a deficient number, since it is larger than the sum of its proper divisors (1).

389687 is an equidigital number, since it uses as much as digits as its factorization.

389687 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 41.

The square root of 389687 is about 624.2491489782. The cubic root of 389687 is about 73.0418850143.

The spelling of 389687 in words is "three hundred eighty-nine thousand, six hundred eighty-seven".