998808319 has 2 divisors, whose sum is σ = 998808320. Its totient is φ = 998808318.

The previous prime is 998808301. The next prime is 998808337. The reversal of 998808319 is 913808899.

It is a balanced prime because it is at equal distance from previous prime (998808301) and next prime (998808337).

It is an emirp because it is prime and its reverse (913808899) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 998808319 - 2⁵ = 998808287 is a prime.

It is a super-2 number, since 2×998808319² = 1995236116207211522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 998808319.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (998802319) 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, 499404159 + 499404160.

It is an arithmetic number, because the mean of its divisors is an integer number (499404160).

Almost surely, 2^998808319 is an apocalyptic number.

998808319 is a deficient number, since it is larger than the sum of its proper divisors (1).

998808319 is an equidigital number, since it uses as much as digits as its factorization.

998808319 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1119744, while the sum is 55.

The square root of 998808319 is about 31603.9288538625. The cubic root of 998808319 is about 999.6026151062.

The spelling of 998808319 in words is "nine hundred ninety-eight million, eight hundred eight thousand, three hundred nineteen".