Refrigerate or freeze cooked pork within 2 hours of when it was cooked. Frozen cooked pork should be eaten within about three or four months. Although the meat is safe to eat beyond this time frame, its quality might diminish.
There are 39 chapters in Divergent. It's approximately 500 pages long. Divergent is a young adult novel about a girl named Beatrice living in dystopian Chicago where society has been divided into factions dedicated to various virtues. Every person must pick one group, and therefore virtue, to which they will dedicate the rest of their lives.
There are no varying lengths because there are no other editions at this time (as the other answerer suggests). At least none that I know of, or have been able to find. Sometimes the paperback editions will vary in page length but since there is no paperback version for Divergent yet, that's not an issue.