3421091 has 2 divisors, whose sum is σ = 3421092. Its totient is φ = 3421090.

The previous prime is 3421079. The next prime is 3421109. The reversal of 3421091 is 1901243.

3421091 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with next prime (3421109) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3421091 is a prime.

It is not a weakly prime, because it can be changed into another prime (3421021) 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, 1710545 + 1710546.

It is an arithmetic number, because the mean of its divisors is an integer number (1710546).

Almost surely, 2^3421091 is an apocalyptic number.

3421091 is a deficient number, since it is larger than the sum of its proper divisors (1).

3421091 is an equidigital number, since it uses as much as digits as its factorization.

3421091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 3421091 is about 1849.6191499874. The cubic root of 3421091 is about 150.6797446249.

The spelling of 3421091 in words is "three million, four hundred twenty-one thousand, ninety-one".