998213833 has 2 divisors, whose sum is σ = 998213834. Its totient is φ = 998213832.

The previous prime is 998213831. The next prime is 998213851. The reversal of 998213833 is 338312899.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 751472569 + 246741264 = 27413^2 + 15708^2 .

It is an emirp because it is prime and its reverse (338312899) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 998213833 - 2¹ = 998213831 is a prime.

Together with 998213831, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (998213831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499106916 + 499106917.

It is an arithmetic number, because the mean of its divisors is an integer number (499106917).

Almost surely, 2^998213833 is an apocalyptic number.

It is an amenable number.

998213833 is a deficient number, since it is larger than the sum of its proper divisors (1).

998213833 is an equidigital number, since it uses as much as digits as its factorization.

998213833 is an evil number, because the sum of its binary digits is even.

The product of its digits is 279936, while the sum is 46.

The square root of 998213833 is about 31594.5221992674. The cubic root of 998213833 is about 999.4042561598.

The spelling of 998213833 in words is "nine hundred ninety-eight million, two hundred thirteen thousand, eight hundred thirty-three".