Order 1152.
408 conjugacy classes of subgroups.
The subgroup lattice has 255 nodes — too large to display as a diagram.
Splittings G = N ⋊ H with N normal; H ≅ G/N.
| N | H ≅ G/N | type |
|---|---|---|
| 19. Dic9⋊C8 | C4 | semidirect |
| 20. C8×Dic9 | C4 | semidirect |
| 87. C9⋊C8 | C4⋊C4 | semidirect |
| 131. Dic9 | #97 | semidirect |
| 208. C9 | #1770 | semidirect |
By isomorphism type — maximal subgroups of the same type appear once, whether or not they are normal.
| subgroup | index |
|---|---|
| C2×#63375 | 2 |
| C2×Dic9⋊C8 | 2 |
| C2×C8×Dic9 | 2 |
| C4×Dic9⋊C4 | 2 |
| C2×#63362 | 2 |
| C9×#336 | 2 |
| #10588228 | 2 |
| #68652 | 3 |