How many copies has the single 'Umbrella' by Rihanna sold worldwide?!

How many copies has the single 'Umbrella' by Rihanna sold worldwide?

I am just curious as to how many copies of Rihanna's single 'Umbrella' have been sold wordlwide, in both digital and physical formats. I am sure it's at least 5 million, judging by the song's huge chart success, but just wondering if anyone had access to exact figures?

6 million units so far and its still number one in Canadian, Irish, German, United States, Australian, New Zealand, Polish, French, Austrian, Belgian, Norwegian, UK , South Africa , Japan and Swiss charts, along with the United World Chart.

So in two weeks time it might be 8 million.