11416721 has 2 divisors, whose sum is σ = 11416722. Its totient is φ = 11416720.

The previous prime is 11416709. The next prime is 11416747. The reversal of 11416721 is 12761411.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11155600 + 261121 = 3340^2 + 511^2 .

It is a cyclic number.

It is not a de Polignac number, because 11416721 - 2¹⁰ = 11415697 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 (11416751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5708360 + 5708361.

It is an arithmetic number, because the mean of its divisors is an integer number (5708361).

Almost surely, 2^11416721 is an apocalyptic number.

It is an amenable number.

11416721 is a deficient number, since it is larger than the sum of its proper divisors (1).

11416721 is an equidigital number, since it uses as much as digits as its factorization.

11416721 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 336, while the sum is 23.

The square root of 11416721 is about 3378.8638623064. The cubic root of 11416721 is about 225.1716944633.

The spelling of 11416721 in words is "eleven million, four hundred sixteen thousand, seven hundred twenty-one".