What was this time travel sci fi book?

Can anyone help me remember the name of this sci fi story?

From what I remember, a prisoner was selected to pilot a cargo ship at extreme distances and speeds. So much so, that relativistic time dialation and such occur. When he arrives, it will be 10,000 years in the future. I remember an AI that kept him company. Some old lady that is searching for eternal life and ends up finding it by using transporters, also a world divided between boys and girls? Ring any bells?

“A World Out of Time” by Larry Niven

It was a novelization of the short story Rammer.