998111927 has 2 divisors, whose sum is σ = 998111928. Its totient is φ = 998111926.

The previous prime is 998111899. The next prime is 998111941. The reversal of 998111927 is 729111899.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 998111927 - 2¹⁰ = 998110903 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 (998111977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499055963 + 499055964.

It is an arithmetic number, because the mean of its divisors is an integer number (499055964).

Almost surely, 2^998111927 is an apocalyptic number.

998111927 is a deficient number, since it is larger than the sum of its proper divisors (1).

998111927 is an equidigital number, since it uses as much as digits as its factorization.

998111927 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 81648, while the sum is 47.

The square root of 998111927 is about 31592.9094418352. The cubic root of 998111927 is about 999.3702458263.

The spelling of 998111927 in words is "nine hundred ninety-eight million, one hundred eleven thousand, nine hundred twenty-seven".