44045509 has 2 divisors, whose sum is σ = 44045510. Its totient is φ = 44045508.

The previous prime is 44045501. The next prime is 44045537. The reversal of 44045509 is 90554044.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33385284 + 10660225 = 5778^2 + 3265^2 .

It is a cyclic number.

It is not a de Polignac number, because 44045509 - 2³ = 44045501 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44045501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22022754 + 22022755.

It is an arithmetic number, because the mean of its divisors is an integer number (22022755).

Almost surely, 2^44045509 is an apocalyptic number.

It is an amenable number.

44045509 is a deficient number, since it is larger than the sum of its proper divisors (1).

44045509 is an equidigital number, since it uses as much as digits as its factorization.

44045509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 44045509 is about 6636.6790641103. The cubic root of 44045509 is about 353.1565057018.

The spelling of 44045509 in words is "forty-four million, forty-five thousand, five hundred nine".