sure.  the site http://coinmarketcap.com/currencies/views/all/ lists clams as 49th and says there are 1million clams worth 400k$

on justdice (https://just-dice.com/) there are 900k clams invested.  Almost the whole lot?
On (http://blocktree.io/richlist/CLAM) it says the top guy, with 800k clams has 5% of the total, implying 16million.
This site (http://khashier.com/chain/Clam) based on the blockchain says (i think) that there are 15.5million clams.

if they're 40cents each, that's more than $400k.  much more.  like 5 or 6 million dollars.

It is true the utility is limited by only having a few places to use clams.  But in the world of currencies, belief can become truth.
In the world period, actually.