4442445409 has 2 divisors, whose sum is σ = 4442445410. Its totient is φ = 4442445408.

The previous prime is 4442445361. The next prime is 4442445419. The reversal of 4442445409 is 9045442444.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2587248225 + 1855197184 = 50865^2 + 43072^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4442445409 is a prime.

It is not a weakly prime, because it can be changed into another prime (4442445419) 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, 2221222704 + 2221222705.

It is an arithmetic number, because the mean of its divisors is an integer number (2221222705).

Almost surely, 2^4442445409 is an apocalyptic number.

It is an amenable number.

4442445409 is a deficient number, since it is larger than the sum of its proper divisors (1).

4442445409 is an equidigital number, since it uses as much as digits as its factorization.

4442445409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 368640, while the sum is 40.

The square root of 4442445409 is about 66651.6722145814. The cubic root of 4442445409 is about 1643.8948436527.

The spelling of 4442445409 in words is "four billion, four hundred forty-two million, four hundred forty-five thousand, four hundred nine".