398087 has 2 divisors, whose sum is σ = 398088. Its totient is φ = 398086.

The previous prime is 398077. The next prime is 398113. The reversal of 398087 is 780893.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 398087 - 2⁶ = 398023 is a prime.

It is a Chen prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 398087.

It is not a weakly prime, because it can be changed into another prime (398077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199043 + 199044.

It is an arithmetic number, because the mean of its divisors is an integer number (199044).

2³⁹⁸⁰⁸⁷ is an apocalyptic number.

398087 is a deficient number, since it is larger than the sum of its proper divisors (1).

398087 is an equidigital number, since it uses as much as digits as its factorization.

398087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 398087 is about 630.9413601913. The cubic root of 398087 is about 73.5629830199.

The spelling of 398087 in words is "three hundred ninety-eight thousand, eighty-seven".