I have to say, I really didn't like this article. The fact that people believe in so many superstitious things in the 21st century continues to astound me, when there are powerful modes of explanation out there now that beat anything superstition ever gave us. e.g. science. Just remember it was the Aztec's superstition, and unwillingness to test their theories, that led to them committing untold human sacrifices. Superstition can be harmful, even though numerology is probably quite harmless. That said, let's look at some reasons why we should suspect that the viewpoint put forth in this article is not true:

1. Numbers have no inherent meaning. In mathematics it is only the relationships between properties of numbers (e.g. 2 + 2 = 4, 2*7 = 14) that are studied. Not their mystical relationship to human well being.
2. Our month system is completely arbitrary, due to historical accident. We could just as easily have had four "months", one for each season, or 24 months, one for each half-month. It all depended on the rulers we had. Now you could make the argument that history was pre-ordained but then you're piling another superstition on top of the first one.