Am I the only one in who associates the number 4 with this song?

So I bet most of you knows this song. This is the 2013 song Safe And Sound by Capital Cities. I remember hearing it for the first time in summer of 2014 when I was only 13 years old. I remember playing GTA Vice City and modding it a lot and hearing this song. But idk why I associate this song with the number 4 so much. Like the instrumental right after the chorus which is basically the Synth melody always made me imagine this is a song usually 40 year olds or just people in their 40s would listen to. My 13 year old mind often thought this is a song usually people in their 40s would enjoy due to that Synth haha(yeah I explained that I associate the song with number 4) but even now at 25, after hearing this song after quite a while it still feels as mostly something 40s people will listen as it's been ingrained in my mind. Also suppose if someone is 45 years old, I used to keep singing "Forty five five five five five....." in the same melody as the Synth in the song.

But it's not really about the age. Even if someone's height is in the 4 feet range, this song comes in my mind. Doesn't matter if the person is 4'7 or 4'10 or even 4'11 in height, this song starts playing in my mind and idk why haha. Doesn't happen anymore if the person is 5 feet or taller haha. Even now if I hear someone being in the 4 feet height range, this song comes in my mind. Same with scores in exams too. I remember in school of someone scored in the 40s range in exam too this song would come in my mind. For example if someone scored 42/100 in an exam, idk this song used to come in my mind. Am I the only one?
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