998933239 has 2 divisors, whose sum is σ = 998933240. Its totient is φ = 998933238.

The previous prime is 998933231. The next prime is 998933251. The reversal of 998933239 is 932339899.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 998933239 - 2³ = 998933231 is a prime.

It is a super-2 number, since 2×998933239² = 1995735231958062242, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 998933239.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (998933231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499466619 + 499466620.

It is an arithmetic number, because the mean of its divisors is an integer number (499466620).

Almost surely, 2^998933239 is an apocalyptic number.

998933239 is a deficient number, since it is larger than the sum of its proper divisors (1).

998933239 is an equidigital number, since it uses as much as digits as its factorization.

998933239 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2834352, while the sum is 55.

The square root of 998933239 is about 31605.9051286306. The cubic root of 998933239 is about 999.6442864829.

The spelling of 998933239 in words is "nine hundred ninety-eight million, nine hundred thirty-three thousand, two hundred thirty-nine".