998916799 has 2 divisors, whose sum is σ = 998916800. Its totient is φ = 998916798.

The previous prime is 998916727. The next prime is 998916817. The reversal of 998916799 is 997619899.

It is a strong prime.

It is an emirp because it is prime and its reverse (997619899) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 998916799 - 2¹¹ = 998914751 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 (998916299) 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, 499458399 + 499458400.

It is an arithmetic number, because the mean of its divisors is an integer number (499458400).

Almost surely, 2^998916799 is an apocalyptic number.

998916799 is a deficient number, since it is larger than the sum of its proper divisors (1).

998916799 is an equidigital number, since it uses as much as digits as its factorization.

998916799 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19840464, while the sum is 67.

The square root of 998916799 is about 31605.6450495794. The cubic root of 998916799 is about 999.6388025521.

The spelling of 998916799 in words is "nine hundred ninety-eight million, nine hundred sixteen thousand, seven hundred ninety-nine".