G = E27xV9 is Direct product E27 x C_3 x C_3
G has 4 minimal generators, rank 4 and exponent 3. The centre has rank 3.
The 40 maximal subgroups are: E27xC3 (36x), V81 (4x).
There are 4 conjugacy classes of maximal elementary abelian subgroups. Their ranks are: 4, 4, 4, 4.
At present no information on the cohomology ring.