4444004003909 has 2 divisors, whose sum is σ = 4444004003910. Its totient is φ = 4444004003908.

The previous prime is 4444004003903. The next prime is 4444004003911. The reversal of 4444004003909 is 9093004004444.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4426605602500 + 17398401409 = 2103950^2 + 131903^2 .

It is a cyclic number.

It is not a de Polignac number, because 4444004003909 - 2¹⁶ = 4444003938373 is a prime.

Together with 4444004003911, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4444004003903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2222002001954 + 2222002001955.

It is an arithmetic number, because the mean of its divisors is an integer number (2222002001955).

Almost surely, 2^{4444004003909} is an apocalyptic number.

It is an amenable number.

4444004003909 is a deficient number, since it is larger than the sum of its proper divisors (1).

4444004003909 is an equidigital number, since it uses as much as digits as its factorization.

4444004003909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 248832, while the sum is 41.

The spelling of 4444004003909 in words is "four trillion, four hundred forty-four billion, four million, three thousand, nine hundred nine".