3491491 has 2 divisors, whose sum is σ = 3491492. Its totient is φ = 3491490.

The previous prime is 3491479. The next prime is 3491533. The reversal of 3491491 is 1941943.

3491491 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3491491 - 2⁷ = 3491363 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (3491401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1745745 + 1745746.

It is an arithmetic number, because the mean of its divisors is an integer number (1745746).

Almost surely, 2^3491491 is an apocalyptic number.

3491491 is a deficient number, since it is larger than the sum of its proper divisors (1).

3491491 is an equidigital number, since it uses as much as digits as its factorization.

3491491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3888, while the sum is 31.

The square root of 3491491 is about 1868.5531836156. The cubic root of 3491491 is about 151.7063090567.

The spelling of 3491491 in words is "three million, four hundred ninety-one thousand, four hundred ninety-one".