244245509 has 2 divisors, whose sum is σ = 244245510. Its totient is φ = 244245508.

The previous prime is 244245503. The next prime is 244245527. The reversal of 244245509 is 905542442.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 207072100 + 37173409 = 14390^2 + 6097^2 .

It is a cyclic number.

It is not a de Polignac number, because 244245509 - 2⁴ = 244245493 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (244245503) 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, 122122754 + 122122755.

It is an arithmetic number, because the mean of its divisors is an integer number (122122755).

Almost surely, 2^244245509 is an apocalyptic number.

It is an amenable number.

244245509 is a deficient number, since it is larger than the sum of its proper divisors (1).

244245509 is an equidigital number, since it uses as much as digits as its factorization.

244245509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 57600, while the sum is 35.

The square root of 244245509 is about 15628.3559276080. The cubic root of 244245509 is about 625.0894881997.

The spelling of 244245509 in words is "two hundred forty-four million, two hundred forty-five thousand, five hundred nine".