11716409 has 2 divisors, whose sum is σ = 11716410. Its totient is φ = 11716408.

The previous prime is 11716403. The next prime is 11716433. The reversal of 11716409 is 90461711.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7728400 + 3988009 = 2780^2 + 1997^2 .

It is a cyclic number.

It is not a de Polignac number, because 11716409 - 2⁸ = 11716153 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (11716403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5858204 + 5858205.

It is an arithmetic number, because the mean of its divisors is an integer number (5858205).

Almost surely, 2^11716409 is an apocalyptic number.

It is an amenable number.

11716409 is a deficient number, since it is larger than the sum of its proper divisors (1).

11716409 is an equidigital number, since it uses as much as digits as its factorization.

11716409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 29.

The square root of 11716409 is about 3422.9240423942. The cubic root of 11716409 is about 227.1249481926.

The spelling of 11716409 in words is "eleven million, seven hundred sixteen thousand, four hundred nine".