4440043409 has 2 divisors, whose sum is σ = 4440043410. Its totient is φ = 4440043408.

The previous prime is 4440043393. The next prime is 4440043451. The reversal of 4440043409 is 9043400444.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3076366225 + 1363677184 = 55465^2 + 36928^2 .

It is a cyclic number.

It is not a de Polignac number, because 4440043409 - 2⁴ = 4440043393 is a prime.

It is not a weakly prime, because it can be changed into another prime (4440043499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2220021704 + 2220021705.

It is an arithmetic number, because the mean of its divisors is an integer number (2220021705).

Almost surely, 2^4440043409 is an apocalyptic number.

It is an amenable number.

4440043409 is a deficient number, since it is larger than the sum of its proper divisors (1).

4440043409 is an equidigital number, since it uses as much as digits as its factorization.

4440043409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27648, while the sum is 32.

The square root of 4440043409 is about 66633.6507254405. The cubic root of 4440043409 is about 1643.5985093195.

The spelling of 4440043409 in words is "four billion, four hundred forty million, forty-three thousand, four hundred nine".