2011404443 has 2 divisors, whose sum is σ = 2011404444. Its totient is φ = 2011404442.

The previous prime is 2011404389. The next prime is 2011404449. The reversal of 2011404443 is 3444041102.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2011404443 - 2¹⁰ = 2011403419 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (2011404449) 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, 1005702221 + 1005702222.

It is an arithmetic number, because the mean of its divisors is an integer number (1005702222).

Almost surely, 2^2011404443 is an apocalyptic number.

2011404443 is a deficient number, since it is larger than the sum of its proper divisors (1).

2011404443 is an equidigital number, since it uses as much as digits as its factorization.

2011404443 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 2011404443 is about 44848.6838491388. The cubic root of 2011404443 is about 1262.3112953655.

Adding to 2011404443 its reverse (3444041102), we get a palindrome (5455445545).

The spelling of 2011404443 in words is "two billion, eleven million, four hundred four thousand, four hundred forty-three".