999968269 has 2 divisors, whose sum is σ = 999968270. Its totient is φ = 999968268.

The previous prime is 999968267. The next prime is 999968279. The reversal of 999968269 is 962869999.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 567868900 + 432099369 = 23830^2 + 20787^2 .

It is a cyclic number.

It is not a de Polignac number, because 999968269 - 2¹ = 999968267 is a prime.

It is a super-2 number, since 2×999968269² = 1999873078013712722, which contains 22 as substring.

Together with 999968267, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (999968261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499984134 + 499984135.

It is an arithmetic number, because the mean of its divisors is an integer number (499984135).

Almost surely, 2^999968269 is an apocalyptic number.

It is an amenable number.

999968269 is a deficient number, since it is larger than the sum of its proper divisors (1).

999968269 is an equidigital number, since it uses as much as digits as its factorization.

999968269 is an evil number, because the sum of its binary digits is even.

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

The square root of 999968269 is about 31622.2748865416. The cubic root of 999968269 is about 999.9894228881.

The spelling of 999968269 in words is "nine hundred ninety-nine million, nine hundred sixty-eight thousand, two hundred sixty-nine".