Subtracting from 437 its product of digits (84), we obtain a palindrome (353).
437 is nontrivially palindromic in base 9.
437 is an esthetic number in base 3, because in such base its adjacent digits differ by 1.
It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 734 = 2 ⋅367.
It is a cyclic number.
It is a Duffinian number.
437 is an undulating number in base 9.
It is a plaindrome in base 11, base 13 and base 14.
It is a nialpdrome in base 5 and base 8.
It is a congruent number.
It is an amenable number.
437 is a wasteful number, since it uses less digits than its factorization.
437 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 42.
The square root of 437 is about 20.9045449604. The cubic root of 437 is about 7.5885793378.
The spelling of 437 in words is "four hundred thirty-seven", and thus it is an aban number.