998794289 has 2 divisors, whose sum is σ = 998794290. Its totient is φ = 998794288.

The previous prime is 998794283. The next prime is 998794309. The reversal of 998794289 is 982497899.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 785400625 + 213393664 = 28025^2 + 14608^2 .

It is a cyclic number.

It is not a de Polignac number, because 998794289 - 2⁴ = 998794273 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (998794283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499397144 + 499397145.

It is an arithmetic number, because the mean of its divisors is an integer number (499397145).

Almost surely, 2^998794289 is an apocalyptic number.

It is an amenable number.

998794289 is a deficient number, since it is larger than the sum of its proper divisors (1).

998794289 is an equidigital number, since it uses as much as digits as its factorization.

998794289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23514624, while the sum is 65.

The square root of 998794289 is about 31603.7068870093. The cubic root of 998794289 is about 999.5979346985.

The spelling of 998794289 in words is "nine hundred ninety-eight million, seven hundred ninety-four thousand, two hundred eighty-nine".