26-190 (99.8%), 250-800 (1%), 801-2800 (0.1%), 2801-9600 (< 0.1%) satoshi every 60 minutes.
Bitcoin is a decentralized crypto-currency, meaning that no one entity control the amount of currency available. This means that the currency is safe from hyper inflation due to a government's action, including quantitative easing or printing of its own currency. An investment in Bitcoin can be seen as even better than gold in acting as an insurance against inflation in your own fiat currency.
Bitcoin makes it very easy to send payments from person to person with very little fees and oversight. There are many online stores that will accept Bitcoin as form of payment, and the number grows every day. Furthermore, as Bitcoin becomes more accepted, Bitcoin itself could be a good investment since the supply is limited, and growing demand will increase the price naturally.