Order 324.
78 conjugacy classes of subgroups.
| subgroup | G/H | |
|---|---|---|
| center, hypercenter | C2 | C3⋊AGL(1,ℤ/9) |
| commutator, hypocenter | C3×C9 | C3×C4 |
| Frattini | C2×C3 | C3×C3⋊D3 |
| Fitting | C2×C3×3−1+2 | C2 |
| socle | C2×C32 | C3×D3 |
| prime radical | C2×C33 | D3 |
| cosocle | C2×C3×C9 | C2×C3 |
| LCS | G ▷ C3×C9 | |
| UCS | C1 ◁ C2 | |
Splittings G = N ⋊ H with N normal; H ≅ G/N.
| N | H ≅ G/N | type |
|---|---|---|
| 3. C3⋊Dic9 | C3 | semidirect |
| 5. C3×3−1+2 | C4 | semidirect |
| 17. 3−1+2 | Dic3 | semidirect |
| 19. C3×C9 | C3×C4 | semidirect |
| 34. C9 | C3×Dic3 | semidirect |
| 42. C3 | 3−1+2⋊C4 | semidirect |
By isomorphism type — maximal subgroups of the same type appear once, whether or not they are normal.
| subgroup | index |
|---|---|
| C2×C3×3−1+2 | 2 |
| C3×C3⋊Dic3 | 3 |
| C3⋊Dic9 | 3 |
| 3−1+2⋊C4 | 3 |