998937911 has 2 divisors, whose sum is σ = 998937912. Its totient is φ = 998937910.

The previous prime is 998937889. The next prime is 998937923. The reversal of 998937911 is 119739899.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 998937911 - 2¹⁴ = 998921527 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (998937941) 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, 499468955 + 499468956.

It is an arithmetic number, because the mean of its divisors is an integer number (499468956).

Almost surely, 2^998937911 is an apocalyptic number.

998937911 is a deficient number, since it is larger than the sum of its proper divisors (1).

998937911 is an equidigital number, since it uses as much as digits as its factorization.

998937911 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1102248, while the sum is 56.

The square root of 998937911 is about 31605.9790387832. The cubic root of 998937911 is about 999.6458449223.

The spelling of 998937911 in words is "nine hundred ninety-eight million, nine hundred thirty-seven thousand, nine hundred eleven".