998338769 has 2 divisors, whose sum is σ = 998338770. Its totient is φ = 998338768.

The previous prime is 998338741. The next prime is 998338801. The reversal of 998338769 is 967833899.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 835903744 + 162435025 = 28912^2 + 12745^2 .

It is an emirp because it is prime and its reverse (967833899) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-998338769 is a prime.

It is a super-2 number, since 2×998338769² = 1993360595376870722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (998338169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499169384 + 499169385.

It is an arithmetic number, because the mean of its divisors is an integer number (499169385).

Almost surely, 2^998338769 is an apocalyptic number.

It is an amenable number.

998338769 is a deficient number, since it is larger than the sum of its proper divisors (1).

998338769 is an equidigital number, since it uses as much as digits as its factorization.

998338769 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17635968, while the sum is 62.

The square root of 998338769 is about 31596.4993155887. The cubic root of 998338769 is about 999.4459494180.

The spelling of 998338769 in words is "nine hundred ninety-eight million, three hundred thirty-eight thousand, seven hundred sixty-nine".