998338811 has 2 divisors, whose sum is σ = 998338812. Its totient is φ = 998338810.

The previous prime is 998338801. The next prime is 998338813. The reversal of 998338811 is 118833899.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 998338811 - 2¹⁰ = 998337787 is a prime.

Together with 998338813, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 998338811.

It is not a weakly prime, because it can be changed into another prime (998338813) 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, 499169405 + 499169406.

It is an arithmetic number, because the mean of its divisors is an integer number (499169406).

Almost surely, 2^998338811 is an apocalyptic number.

998338811 is a deficient number, since it is larger than the sum of its proper divisors (1).

998338811 is an equidigital number, since it uses as much as digits as its factorization.

998338811 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 373248, while the sum is 50.

The square root of 998338811 is about 31596.4999802193. The cubic root of 998338811 is about 999.4459634335.

The spelling of 998338811 in words is "nine hundred ninety-eight million, three hundred thirty-eight thousand, eight hundred eleven".