998934659 has 2 divisors, whose sum is σ = 998934660. Its totient is φ = 998934658.

The previous prime is 998934653. The next prime is 998934733. The reversal of 998934659 is 956439899.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-998934659 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 (998934653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499467329 + 499467330.

It is an arithmetic number, because the mean of its divisors is an integer number (499467330).

Almost surely, 2^998934659 is an apocalyptic number.

998934659 is a deficient number, since it is larger than the sum of its proper divisors (1).

998934659 is an equidigital number, since it uses as much as digits as its factorization.

998934659 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18895680, while the sum is 62.

The square root of 998934659 is about 31605.9275927792. The cubic root of 998934659 is about 999.6447601529.

The spelling of 998934659 in words is "nine hundred ninety-eight million, nine hundred thirty-four thousand, six hundred fifty-nine".