13266289 has 2 divisors, whose sum is σ = 13266290. Its totient is φ = 13266288.

The previous prime is 13266257. The next prime is 13266301. The reversal of 13266289 is 98266231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13198689 + 67600 = 3633^2 + 260^2 .

It is a cyclic number.

It is not a de Polignac number, because 13266289 - 2⁵ = 13266257 is a prime.

It is not a weakly prime, because it can be changed into another prime (13266229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6633144 + 6633145.

It is an arithmetic number, because the mean of its divisors is an integer number (6633145).

Almost surely, 2^13266289 is an apocalyptic number.

It is an amenable number.

13266289 is a deficient number, since it is larger than the sum of its proper divisors (1).

13266289 is an equidigital number, since it uses as much as digits as its factorization.

13266289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31104, while the sum is 37.

The square root of 13266289 is about 3642.2917236268. The cubic root of 13266289 is about 236.7281030303.

The spelling of 13266289 in words is "thirteen million, two hundred sixty-six thousand, two hundred eighty-nine".