998343659 has 2 divisors, whose sum is σ = 998343660. Its totient is φ = 998343658.

The previous prime is 998343611. The next prime is 998343667. The reversal of 998343659 is 956343899.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 998343659 - 2²⁰ = 997295083 is a prime.

It is a super-2 number, since 2×998343659² = 1993380122931016562, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (998343559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499171829 + 499171830.

It is an arithmetic number, because the mean of its divisors is an integer number (499171830).

Almost surely, 2^998343659 is an apocalyptic number.

998343659 is a deficient number, since it is larger than the sum of its proper divisors (1).

998343659 is an equidigital number, since it uses as much as digits as its factorization.

998343659 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6298560, while the sum is 56.

The square root of 998343659 is about 31596.5766974842. The cubic root of 998343659 is about 999.4475812230.

The spelling of 998343659 in words is "nine hundred ninety-eight million, three hundred forty-three thousand, six hundred fifty-nine".