289269269 has 2 divisors, whose sum is σ = 289269270. Its totient is φ = 289269268.

The previous prime is 289269251. The next prime is 289269307. The reversal of 289269269 is 962962982.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 179292100 + 109977169 = 13390^2 + 10487^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-289269269 is a prime.

It is a super-2 number, since 2×289269269² = 167353419975588722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 289269269.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (289269769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 144634634 + 144634635.

It is an arithmetic number, because the mean of its divisors is an integer number (144634635).

Almost surely, 2^289269269 is an apocalyptic number.

It is an amenable number.

289269269 is a deficient number, since it is larger than the sum of its proper divisors (1).

289269269 is an equidigital number, since it uses as much as digits as its factorization.

289269269 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1679616, while the sum is 53.

The square root of 289269269 is about 17007.9178325861. The cubic root of 289269269 is about 661.3541747886.

The spelling of 289269269 in words is "two hundred eighty-nine million, two hundred sixty-nine thousand, two hundred sixty-nine".