It is almost impossible to acurately analyze this circuit, because CMOS inverters are digital devices, and are not characterized as analog amplifiers. You can generally say that the open loop gain of the 4049 will be fairly high, but with the high feedback ratio on IC1A, I would say it is impossible to mathematically predict the closed loop gain or bandwidth. Even a spice simulator would probably be wrong. You might be able to predict the response of the filter, if the transfer function turns out to be insensitive to IC1B's open loop transconductance and output impedance.
The rest of the circuit is pretty much digital.
Why do you want to analyze it? Just build the damned thing, and see if it works.