998111119 has 2 divisors, whose sum is σ = 998111120. Its totient is φ = 998111118.

The previous prime is 998111111. The next prime is 998111131. The reversal of 998111119 is 911111899.

It is a weak prime.

It is an emirp because it is prime and its reverse (911111899) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 998111119 - 2³ = 998111111 is a prime.

It is a super-2 number, since 2×998111119² = 1992451611742864322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (998111111) 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, 499055559 + 499055560.

It is an arithmetic number, because the mean of its divisors is an integer number (499055560).

Almost surely, 2^998111119 is an apocalyptic number.

998111119 is a deficient number, since it is larger than the sum of its proper divisors (1).

998111119 is an equidigital number, since it uses as much as digits as its factorization.

998111119 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5832, while the sum is 40.

The square root of 998111119 is about 31592.8966541531. The cubic root of 998111119 is about 999.3699761533.

The spelling of 998111119 in words is "nine hundred ninety-eight million, one hundred eleven thousand, one hundred nineteen".