if $i$ is a number then what is its numerical value?

$i$ is the unit imaginary part of complex number , but there is a question which it is mixed me probably i missed the definition of a number , wolfram alpha $i$ is assumed to be a number , and others assumed it to be variable because it satisfies $\sqrt{i^2}$ =$+i$ or $-i$ then my question here :

Question:
Is $i$ a number then what is it's value ?

Answer

Asking what's the value of $i$ is like asking what's the value of $2$. And, just like $i^2$ has two square roots, $i$ and $-i$, $2^2$ has two square roots, $2$, and $-2$.

And yes, it is a number, not a variable.