266449 has 2 divisors, whose sum is σ = 266450. Its totient is φ = 266448.

The previous prime is 266447. The next prime is 266477. The reversal of 266449 is 944662.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 208849 + 57600 = 457^2 + 240^2 .

It is a cyclic number.

It is not a de Polignac number, because 266449 - 2¹ = 266447 is a prime.

Together with 266447, it forms a pair of twin primes.

It is a Chen prime.

It is a d-powerful number, because it can be written as 2⁷ + 6² + 4⁶ + 6² + 4⁹ + 9 .

266449 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 266449.

It is not a weakly prime, because it can be changed into another prime (266447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133224 + 133225.

It is an arithmetic number, because the mean of its divisors is an integer number (133225).

2²⁶⁶⁴⁴⁹ is an apocalyptic number.

It is an amenable number.

266449 is a deficient number, since it is larger than the sum of its proper divisors (1).

266449 is an equidigital number, since it uses as much as digits as its factorization.

266449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10368, while the sum is 31.

The square root of 266449 is about 516.1869816258. The cubic root of 266449 is about 64.3484413019.

The spelling of 266449 in words is "two hundred sixty-six thousand, four hundred forty-nine".