Apple Inc. sold its millionth iPhone over the weekend, days after it slashed the price by a third to spur sales.

The milestone was reached weeks earlier than expected and sent shares of Apple up $4.94, or 3.8 percent, to $136.71. The stock regained some of the ground it lost after the price cut spooked investors as a sign of weak demand and slimmer margins.

It took just 74 days for the combination cell phone-iPod to hit the 1 million mark, which Apple had said it would achieve by the end of September. By comparison, it took two years for the company to sell 1 million iPods, Apple CEO Steve Jobs noted in a statement.

Last week, Apple knocked $200 off the price of the 8-gigabyte iPhone, bringing its price to $399, and discontinued the 4-gigabyte version. Apple spokeswoman Natalie Kerris declined to comment on whether the price cut helped spur sales.