3491

3491 is an integer in the decimal system. It is four-digit and odd, lying between 3490 and 3492. In the sequence of natural numbers, it follows 3490 and precedes 3492.

In number theory, 3491 is prime, having no divisors other than 1 and itself. A check of divisibility by primes up to 59 confirms this.

In Roman numerals, it is MMMCDXCI. In base-2, 110110100011; in base-8, 6643; in base-16, DA3.

Since 3491 is a prime congruent to 3 modulo 4, it cannot be written as a sum of two squares. Its decimal digits sum to 17, giving a digital root of 8, and its binary, hexadecimal, and octal representations reflect its four-digit decimal form.