Value Permission
4000 Set user ID on execution
2000 Set group ID on execution
1000 Sticky bit (see the UNIX chmod manual page)
0400 Read permission for file owner
0200 Write permission for file owner
0100 Execute permission for file owner
0040 Read permission for owner's group
0020 Write permission for owner's group
0010 Execute permission for owner's group
0004 Read permission for world
0002 Write permission for world
0001 Execute permission for world