266484949 has 2 divisors, whose sum is σ = 266484950. Its totient is φ = 266484948.

The previous prime is 266484947. The next prime is 266484991. The reversal of 266484949 is 949484662.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 241584849 + 24900100 = 15543^2 + 4990^2 .

It is a cyclic number.

It is not a de Polignac number, because 266484949 - 2¹ = 266484947 is a prime.

Together with 266484947, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 266484896 and 266484905.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (266484947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133242474 + 133242475.

It is an arithmetic number, because the mean of its divisors is an integer number (133242475).

Almost surely, 2^266484949 is an apocalyptic number.

It is an amenable number.

266484949 is a deficient number, since it is larger than the sum of its proper divisors (1).

266484949 is an equidigital number, since it uses as much as digits as its factorization.

266484949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2985984, while the sum is 52.

The square root of 266484949 is about 16324.3667258488. The cubic root of 266484949 is about 643.5133511159.

The spelling of 266484949 in words is "two hundred sixty-six million, four hundred eighty-four thousand, nine hundred forty-nine".