269638249 has 2 divisors, whose sum is σ = 269638250. Its totient is φ = 269638248.

The previous prime is 269638247. The next prime is 269638267. The reversal of 269638249 is 942836962.

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., 256000000 + 13638249 = 16000^2 + 3693^2 .

It is a cyclic number.

It is not a de Polignac number, because 269638249 - 2¹ = 269638247 is a prime.

Together with 269638247, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (269638247) 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, 134819124 + 134819125.

It is an arithmetic number, because the mean of its divisors is an integer number (134819125).

Almost surely, 2^269638249 is an apocalyptic number.

It is an amenable number.

269638249 is a deficient number, since it is larger than the sum of its proper divisors (1).

269638249 is an equidigital number, since it uses as much as digits as its factorization.

269638249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1119744, while the sum is 49.

The square root of 269638249 is about 16420.6653032086. The cubic root of 269638249 is about 646.0416228489.

The spelling of 269638249 in words is "two hundred sixty-nine million, six hundred thirty-eight thousand, two hundred forty-nine".