• Sorting the digits of 2349 in ascending order we obtain a prime of 93 digits.
349 is nontrivially palindromic in base 8.
It is a weak prime.
It is a cyclic number.
It is an alternating number because its digits alternate between odd and even.
349 is an undulating number in base 8.
349 is a lucky number.
It is a plaindrome in base 5, base 10, base 14 and base 16.
It is a congruent number.
It is an amenable number.
349 is an equidigital number, since it uses as much as digits as its factorization.
349 is an evil number, because the sum of its binary digits is even.
The square root of 349 is about 18.6815416923. The cubic root of 349 is about 7.0405806167.
Subtracting from 349 its sum of digits (16), we obtain a palindrome (333).
The spelling of 349 in words is "three hundred forty-nine", and thus it is an aban number.