998883089 has 2 divisors, whose sum is σ = 998883090. Its totient is φ = 998883088.

The previous prime is 998883019. The next prime is 998883097. The reversal of 998883089 is 980388899.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 930738064 + 68145025 = 30508^2 + 8255^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-998883089 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (998883019) 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, 499441544 + 499441545.

It is an arithmetic number, because the mean of its divisors is an integer number (499441545).

Almost surely, 2^998883089 is an apocalyptic number.

It is an amenable number.

998883089 is a deficient number, since it is larger than the sum of its proper divisors (1).

998883089 is an equidigital number, since it uses as much as digits as its factorization.

998883089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8957952, while the sum is 62.

The square root of 998883089 is about 31605.1117542716. Note that the first 3 decimals coincide. The cubic root of 998883089 is about 999.6275576372.

The spelling of 998883089 in words is "nine hundred ninety-eight million, eight hundred eighty-three thousand, eighty-nine".