264839749 has 2 divisors, whose sum is σ = 264839750. Its totient is φ = 264839748.

The previous prime is 264839741. The next prime is 264839761. The reversal of 264839749 is 947938462.

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., 250209124 + 14630625 = 15818^2 + 3825^2 .

It is a cyclic number.

It is not a de Polignac number, because 264839749 - 2³ = 264839741 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 264839696 and 264839705.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (264839741) 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, 132419874 + 132419875.

It is an arithmetic number, because the mean of its divisors is an integer number (132419875).

Almost surely, 2^264839749 is an apocalyptic number.

It is an amenable number.

264839749 is a deficient number, since it is larger than the sum of its proper divisors (1).

264839749 is an equidigital number, since it uses as much as digits as its factorization.

264839749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2612736, while the sum is 52.

The square root of 264839749 is about 16273.8977814167. The cubic root of 264839749 is about 642.1863288447.

The spelling of 264839749 in words is "two hundred sixty-four million, eight hundred thirty-nine thousand, seven hundred forty-nine".