269638669 has 2 divisors, whose sum is σ = 269638670. Its totient is φ = 269638668.

The previous prime is 269638631. The next prime is 269638703. The reversal of 269638669 is 966836962.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 257121225 + 12517444 = 16035^2 + 3538^2 .

It is a cyclic number.

It is not a de Polignac number, because 269638669 - 2⁹ = 269638157 is a prime.

It is a super-2 number, since 2×269638669² = 145410023640183122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (269638069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134819334 + 134819335.

It is an arithmetic number, because the mean of its divisors is an integer number (134819335).

Almost surely, 2^269638669 is an apocalyptic number.

It is an amenable number.

269638669 is a deficient number, since it is larger than the sum of its proper divisors (1).

269638669 is an equidigital number, since it uses as much as digits as its factorization.

269638669 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5038848, while the sum is 55.

The square root of 269638669 is about 16420.6780919668. The cubic root of 269638669 is about 646.0419582827.

The spelling of 269638669 in words is "two hundred sixty-nine million, six hundred thirty-eight thousand, six hundred sixty-nine".