I am trying to export an album cover as 4000x4000 pixels and 300 dpi?

[Kayton37688366ma88]

When I created the artboard I created it as 4000x4000 px and 300 dpi but now that i am exporting, it either exports as 1667x1667 and 300 dpi or 4000 px and 72 dpi....

1. How do I export this in the right size?

2. also my client would like it to be a smaller file size but still 4000 px and 3000 dpi. how do I make the file size smaller without changing these settings? 

[Kayton37688366ma88]

oh and it needs t be jpeg

[Ton Frederiks]

Export at 72 ppi. That will give you the 4000 X 4000 px.

The resolution is just metadata it tells application that 300 pixels must be fit into an inch which makes the size of your image 13,333 inch

[Ton Frederiks]

You can change the resolution in Photoshop or Preview to 300 ppi when you turn resampling off.