Sean Ono Lennon was surrounded by "cosmic woo-woo stuff" as a child.

The 49-year-old musician is the son of Beatles icon John Lennon and his wife Yoko Ono, and Sean has revealed that his mom remains passionate about tarot, astrology and numerology.

Speaking to PEOPLE, Sean joked: "She is deeply into cosmic things, to a level that I've never seen in anyone else. You could argue that she's a good witch.

"I was raised with so much cosmic woo-woo stuff that I rebelled against it. I was more interested in science and rational thinking.

"Growing up, it just felt like everything always had to be about numbers and calculating dates for astrology. [I'd say] 'Mom, can we just do something without worrying about what the tarot cards say!'"

Despite this, Sean still feels pulled towards the mystical.

He explained: "No matter how much I try to reject what I would call supernatural thinking - or superstitious thinking - I can't get it out of my being. I still worry when there are coincidences or if I see the 'wrong' number on a hotel room.

"No matter how rational I pretend to be, I still have it in me. Maybe it's genetic, or maybe it's just because I was raised that way. But the truth is, I secretly do kind of believe all that stuff might be real."

Sean has actually become more appreciative of his mom over time.

He shared: "A lot of what I realized over time was how very right she was about so many things when I was growing up. I think when you're a kid, you resent your parents for so many little things. And as you get older, you learn (if you're lucky) to appreciate them more."