998343559 has 2 divisors, whose sum is σ = 998343560. Its totient is φ = 998343558.

The previous prime is 998343553. The next prime is 998343611. The reversal of 998343559 is 955343899.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (955343899) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 998343559 - 2³ = 998343551 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (998343551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499171779 + 499171780.

It is an arithmetic number, because the mean of its divisors is an integer number (499171780).

Almost surely, 2^998343559 is an apocalyptic number.

998343559 is a deficient number, since it is larger than the sum of its proper divisors (1).

998343559 is an equidigital number, since it uses as much as digits as its factorization.

998343559 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5248800, while the sum is 55.

The square root of 998343559 is about 31596.5751150342. The cubic root of 998343559 is about 999.4475478528.

The spelling of 998343559 in words is "nine hundred ninety-eight million, three hundred forty-three thousand, five hundred fifty-nine".