998098571 has 2 divisors, whose sum is σ = 998098572. Its totient is φ = 998098570.

The previous prime is 998098553. The next prime is 998098579. The reversal of 998098571 is 175890899.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (175890899) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 998098571 - 2¹⁰ = 998097547 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 (998098579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499049285 + 499049286.

It is an arithmetic number, because the mean of its divisors is an integer number (499049286).

Almost surely, 2^998098571 is an apocalyptic number.

998098571 is a deficient number, since it is larger than the sum of its proper divisors (1).

998098571 is an equidigital number, since it uses as much as digits as its factorization.

998098571 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1632960, while the sum is 56.

The square root of 998098571 is about 31592.6980645845. The cubic root of 998098571 is about 999.3657881938.

The spelling of 998098571 in words is "nine hundred ninety-eight million, ninety-eight thousand, five hundred seventy-one".