998386211 has 2 divisors, whose sum is σ = 998386212. Its totient is φ = 998386210.

The previous prime is 998386199. The next prime is 998386241. The reversal of 998386211 is 112683899.

It is a weak prime.

It is an emirp because it is prime and its reverse (112683899) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-998386211 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (998386241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499193105 + 499193106.

It is an arithmetic number, because the mean of its divisors is an integer number (499193106).

Almost surely, 2^998386211 is an apocalyptic number.

998386211 is a deficient number, since it is larger than the sum of its proper divisors (1).

998386211 is an equidigital number, since it uses as much as digits as its factorization.

998386211 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 186624, while the sum is 47.

The square root of 998386211 is about 31597.2500543956. The cubic root of 998386211 is about 999.4617807053.

The spelling of 998386211 in words is "nine hundred ninety-eight million, three hundred eighty-six thousand, two hundred eleven".