CHARLOTTE, N.C. – Tuesday is National Pi Day.

No, not pie as in cherry, blueberry or pizza, but rather the mathematical constant π, which is the ratio of the circumference of a circle to its diameter, or as you likely recognize it, 3.14.

To celebrate, retailers and restaurants are offering up plenty of pie-centric deals and specials.

Pi Day 2017 Deals

Bojangles: The Carolinas’ home for chicken is offering three sweet potato pies for $3.14

Boston Market: Gobble down a delicious chicken pot pie for free with any individual meal and drink purchase.

Hungry Howie’s: Purchase any Howie Bread and receive a medium one-topping pizza for $3.14.

Marco’s Pizza: $3 off $15 order or more

Pizza Hut: $7.99 for large two-topping pizza

Domino’s: Two items for $5.99 each or a large three-topping carryout pizza for just $7.99

Papa John’s: Free large pizza coupon when you spend $15 or more (promo code SWISH) or 50-percent off all pizzas (promo code 50PIZZA)

Non-food deals

Kohl’s: Shop online-only deals on pie bakeware and accessories