998913833 has 2 divisors, whose sum is σ = 998913834. Its totient is φ = 998913832.

The previous prime is 998913763. The next prime is 998913869. The reversal of 998913833 is 338319899.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 982697104 + 16216729 = 31348^2 + 4027^2 .

It is a cyclic number.

It is not a de Polignac number, because 998913833 - 2⁸ = 998913577 is a prime.

It is not a weakly prime, because it can be changed into another prime (998933833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499456916 + 499456917.

It is an arithmetic number, because the mean of its divisors is an integer number (499456917).

Almost surely, 2^998913833 is an apocalyptic number.

It is an amenable number.

998913833 is a deficient number, since it is larger than the sum of its proper divisors (1).

998913833 is an equidigital number, since it uses as much as digits as its factorization.

998913833 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1259712, while the sum is 53.

The square root of 998913833 is about 31605.5981275470. The cubic root of 998913833 is about 999.6378131699.

The spelling of 998913833 in words is "nine hundred ninety-eight million, nine hundred thirteen thousand, eight hundred thirty-three".