398600087 has 2 divisors, whose sum is σ = 398600088. Its totient is φ = 398600086.

The previous prime is 398600053. The next prime is 398600093. The reversal of 398600087 is 780006893.

It is a strong prime.

It is an emirp because it is prime and its reverse (780006893) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 398600087 - 2⁶ = 398600023 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 (398600687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199300043 + 199300044.

It is an arithmetic number, because the mean of its divisors is an integer number (199300044).

Almost surely, 2^398600087 is an apocalyptic number.

398600087 is a deficient number, since it is larger than the sum of its proper divisors (1).

398600087 is an equidigital number, since it uses as much as digits as its factorization.

398600087 is an evil number, because the sum of its binary digits is even.

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

The square root of 398600087 is about 19964.9715001049. The cubic root of 398600087 is about 735.9457410920.

The spelling of 398600087 in words is "three hundred ninety-eight million, six hundred thousand, eighty-seven".