998133413 has 2 divisors, whose sum is σ = 998133414. Its totient is φ = 998133412.

The previous prime is 998133373. The next prime is 998133419. The reversal of 998133413 is 314331899.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 961434049 + 36699364 = 31007^2 + 6058^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-998133413 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (998133419) 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, 499066706 + 499066707.

It is an arithmetic number, because the mean of its divisors is an integer number (499066707).

Almost surely, 2^998133413 is an apocalyptic number.

It is an amenable number.

998133413 is a deficient number, since it is larger than the sum of its proper divisors (1).

998133413 is an equidigital number, since it uses as much as digits as its factorization.

998133413 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69984, while the sum is 41.

The square root of 998133413 is about 31593.2494846605. The cubic root of 998133413 is about 999.3774168039.

The spelling of 998133413 in words is "nine hundred ninety-eight million, one hundred thirty-three thousand, four hundred thirteen".