998269969 has 2 divisors, whose sum is σ = 998269970. Its totient is φ = 998269968.

The previous prime is 998269949. The next prime is 998269973. The reversal of 998269969 is 969962899.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 801569344 + 196700625 = 28312^2 + 14025^2 .

It is a cyclic number.

It is not a de Polignac number, because 998269969 - 2⁷ = 998269841 is a prime.

It is a super-2 number, since 2×998269969² = 1993085862014521922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (998269939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499134984 + 499134985.

It is an arithmetic number, because the mean of its divisors is an integer number (499134985).

Almost surely, 2^998269969 is an apocalyptic number.

It is an amenable number.

998269969 is a deficient number, since it is larger than the sum of its proper divisors (1).

998269969 is an equidigital number, since it uses as much as digits as its factorization.

998269969 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34012224, while the sum is 67.

The square root of 998269969 is about 31595.4105686253. The cubic root of 998269969 is about 999.4229901236.

The spelling of 998269969 in words is "nine hundred ninety-eight million, two hundred sixty-nine thousand, nine hundred sixty-nine".