4440440509 has 2 divisors, whose sum is σ = 4440440510. Its totient is φ = 4440440508.

The previous prime is 4440440483. The next prime is 4440440549. The reversal of 4440440509 is 9050440444.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2604060900 + 1836379609 = 51030^2 + 42853^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4440440509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4440440549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2220220254 + 2220220255.

It is an arithmetic number, because the mean of its divisors is an integer number (2220220255).

Almost surely, 2^4440440509 is an apocalyptic number.

It is an amenable number.

4440440509 is a deficient number, since it is larger than the sum of its proper divisors (1).

4440440509 is an equidigital number, since it uses as much as digits as its factorization.

4440440509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46080, while the sum is 34.

The square root of 4440440509 is about 66636.6303844965. The cubic root of 4440440509 is about 1643.6475068518.

The spelling of 4440440509 in words is "four billion, four hundred forty million, four hundred forty thousand, five hundred nine".