3491 has 2 divisors, whose sum is σ = 3492.
Its totient is φ = 3490.
The previous prime is 3469. The next prime is 3499. The reversal of 3491 is 1943.
It is a strong prime.
It is a cyclic number.
It is not a de Polignac number, because 3491 - 210 = 2467 is a prime.
It is a Sophie Germain prime.
It is a Chen prime.
It is a nialpdrome in base 8 and base 16.
It is not a weakly prime, because it can be changed into another prime (3499) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (7) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1745 + 1746.
It is an arithmetic number, because the mean of its divisors is an integer number (1746).
23491 is an apocalyptic number.
3491 is a deficient number, since it is larger than the sum of its proper divisors (1).
3491 is an equidigital number, since it uses as much as digits as its factorization.
3491 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 108, while the sum is 17.
The square root of 3491 is about 59.0846849869.
The cubic root of 3491 is about 15.1699197359.
It can be divided in two parts, 34 and 91, that added together give a cube (125 = 53).
The spelling of 3491 in words is "three thousand, four hundred ninety-one".