1000440332209 has 2 divisors, whose sum is σ = 1000440332210. Its totient is φ = 1000440332208.

The previous prime is 1000440332159. The next prime is 1000440332261. The reversal of 1000440332209 is 9022330440001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 664159801600 + 336280530609 = 814960^2 + 579897^2 .

It is a cyclic number.

It is not a de Polignac number, because 1000440332209 - 2⁹ = 1000440331697 is a prime.

It is not a weakly prime, because it can be changed into another prime (1000440332909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500220166104 + 500220166105.

It is an arithmetic number, because the mean of its divisors is an integer number (500220166105).

Almost surely, 2^{1000440332209} is an apocalyptic number.

It is an amenable number.

1000440332209 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000440332209 is an equidigital number, since it uses as much as digits as its factorization.

1000440332209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 28.

The spelling of 1000440332209 in words is "one trillion, four hundred forty million, three hundred thirty-two thousand, two hundred nine".