Order 648.
48 conjugacy classes of subgroups.
| subgroup | G/H | |
|---|---|---|
| center, hypercenter | C3×C4 | AGL(1,ℤ/9) |
| commutator, hypocenter | C9 | C8×C9 |
| Frattini | C32×C4 | C3×D3 |
| Fitting | C4×C9⋊C9 | C2 |
| socle, prime radical | C2×C32 | C3×Dic3 |
| cosocle | C3×C4×C9 | C2×C3 |
| LCS | G ▷ C9 | |
| UCS | C1 ◁ C3×C4 | |
Splittings G = N ⋊ H with N normal; H ≅ G/N.
| N | H ≅ G/N | type |
|---|---|---|
| 8. C9⋊C9 | C8 | semidirect |
| 11. C9⋊C8 | C9 | semidirect |
| 37. C9 | C8×C9 | semidirect |
By isomorphism type — maximal subgroups of the same type appear once, whether or not they are normal.
| subgroup | index |
|---|---|
| C4×C9⋊C9 | 2 |
| C9×C3⋊C8 | 3 |
| C3×C9⋊C8 | 3 |