Adding to 1406 its reverse (6041), we get a palindrome (7447).
It is a sphenic number, since it is the product of 3 distinct primes.
It is an Ulam number.
It is a plaindrome in base 16.
It is a nialpdrome in base 5, base 12 and base 13.
It is a congruent number.
1406 is an untouchable number, because it is not equal to the sum of proper divisors of any number.
1406 is a wasteful number, since it uses less digits than its factorization.
1406 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 58.
The square root of 1406 is about 37.4966665185. The cubic root of 1406 is about 11.2028479152.
The spelling of 1406 in words is "one thousand, four hundred six".