Why initializing an object of a value whose type there's a defined ctor doesn't invoke the copy constructor?

Question

Hello I have a simple question: If I have a class that has a constructor that takes an integer for example then if I copy-initialize an object of that class then is copy-constructor or constructor is called:

class M 
{
    public:
        M(int) { cout << "M(int)\n"; }
        M(const M&) = delete;
        M(const M&&) = delete;
};


int main()
{

    M m = 9; // why M(int) is called but not a copy-ctor or move-ctor?
}

• AS you can see I have an ambiguity here: M m = 9; I think it is a form of Copy-initialization so normally I think the copy-ctor or move-ctor should be called. I've declared theme deleted to get an compile-time error but it works?