11404203409 has 2 divisors, whose sum is σ = 11404203410. Its totient is φ = 11404203408.

The previous prime is 11404203359. The next prime is 11404203439. The reversal of 11404203409 is 90430240411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7310763009 + 4093440400 = 85503^2 + 63980^2 .

It is a cyclic number.

It is not a de Polignac number, because 11404203409 - 2⁹ = 11404202897 is a prime.

It is not a weakly prime, because it can be changed into another prime (11404203439) 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, 5702101704 + 5702101705.

It is an arithmetic number, because the mean of its divisors is an integer number (5702101705).

Almost surely, 2^11404203409 is an apocalyptic number.

It is an amenable number.

11404203409 is a deficient number, since it is larger than the sum of its proper divisors (1).

11404203409 is an equidigital number, since it uses as much as digits as its factorization.

11404203409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 28.

The spelling of 11404203409 in words is "eleven billion, four hundred four million, two hundred three thousand, four hundred nine".