998000863 has 2 divisors, whose sum is σ = 998000864. Its totient is φ = 998000862.

The previous prime is 998000789. The next prime is 998000869. The reversal of 998000863 is 368000899.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 998000863 - 2²⁹ = 461129951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (998000869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499000431 + 499000432.

It is an arithmetic number, because the mean of its divisors is an integer number (499000432).

Almost surely, 2^998000863 is an apocalyptic number.

998000863 is a deficient number, since it is larger than the sum of its proper divisors (1).

998000863 is an equidigital number, since it uses as much as digits as its factorization.

998000863 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 93312, while the sum is 43.

The square root of 998000863 is about 31591.1516567535. The cubic root of 998000863 is about 999.3331764452. Note that the first 3 decimals are identical.

The spelling of 998000863 in words is "nine hundred ninety-eight million, eight hundred sixty-three", and thus it is an aban number.