998816359 has 2 divisors, whose sum is σ = 998816360. Its totient is φ = 998816358.

The previous prime is 998816309. The next prime is 998816363. The reversal of 998816359 is 953618899.

It is a strong prime.

It is an emirp because it is prime and its reverse (953618899) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 998816359 - 2²³ = 990427751 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (998816309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499408179 + 499408180.

It is an arithmetic number, because the mean of its divisors is an integer number (499408180).

Almost surely, 2^998816359 is an apocalyptic number.

998816359 is a deficient number, since it is larger than the sum of its proper divisors (1).

998816359 is an equidigital number, since it uses as much as digits as its factorization.

998816359 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4199040, while the sum is 58.

The square root of 998816359 is about 31604.0560529816. The cubic root of 998816359 is about 999.6052972302.

The spelling of 998816359 in words is "nine hundred ninety-eight million, eight hundred sixteen thousand, three hundred fifty-nine".