These numbers are a serial index provided by the database server. It is possible that you could manually fast-forward the index to the ID you are wanting, but ultimately you will have very little control over the numbering. For example, the index is shared across journals and will include both accepted and rejected articles.
If those constraints are acceptable, I briefly tested resetting the mysql index on the my articles table via:
insert into ojs_database.articles (article_id) values (9999);
delete from ojs_database.articles where article_id = 9999;
Then I used the QuickSubmit plugin to add a new unpublished article, which became submission number 10000.