266230249 has 2 divisors, whose sum is σ = 266230250. Its totient is φ = 266230248.

The previous prime is 266230247. The next prime is 266230253. The reversal of 266230249 is 942032662.

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., 246490000 + 19740249 = 15700^2 + 4443^2 .

It is a cyclic number.

It is not a de Polignac number, because 266230249 - 2¹ = 266230247 is a prime.

Together with 266230247, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (266230247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133115124 + 133115125.

It is an arithmetic number, because the mean of its divisors is an integer number (133115125).

Almost surely, 2^266230249 is an apocalyptic number.

It is an amenable number.

266230249 is a deficient number, since it is larger than the sum of its proper divisors (1).

266230249 is an equidigital number, since it uses as much as digits as its factorization.

266230249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 34.

The square root of 266230249 is about 16316.5636394432. The cubic root of 266230249 is about 643.3082674929.

The spelling of 266230249 in words is "two hundred sixty-six million, two hundred thirty thousand, two hundred forty-nine".