998343611 has 2 divisors, whose sum is σ = 998343612. Its totient is φ = 998343610.

The previous prime is 998343559. The next prime is 998343659. The reversal of 998343611 is 116343899.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-998343611 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is equal to p_50767685 and since 998343611 and 50767685 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (998345611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499171805 + 499171806.

It is an arithmetic number, because the mean of its divisors is an integer number (499171806).

Almost surely, 2^998343611 is an apocalyptic number.

998343611 is a deficient number, since it is larger than the sum of its proper divisors (1).

998343611 is an equidigital number, since it uses as much as digits as its factorization.

998343611 is an evil number, because the sum of its binary digits is even.

The product of its digits is 139968, while the sum is 44.

The square root of 998343611 is about 31596.5759379082. The cubic root of 998343611 is about 999.4475652053.

The spelling of 998343611 in words is "nine hundred ninety-eight million, three hundred forty-three thousand, six hundred eleven".