3867091 has 2 divisors, whose sum is σ = 3867092. Its totient is φ = 3867090.

The previous prime is 3867077. The next prime is 3867107. The reversal of 3867091 is 1907683.

3867091 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 3867091 - 2⁷ = 3866963 is a prime.

3867091 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (3867001) 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, 1933545 + 1933546.

It is an arithmetic number, because the mean of its divisors is an integer number (1933546).

Almost surely, 2^3867091 is an apocalyptic number.

3867091 is a deficient number, since it is larger than the sum of its proper divisors (1).

3867091 is an equidigital number, since it uses as much as digits as its factorization.

3867091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 3867091 is about 1966.4920543953. The cubic root of 3867091 is about 156.9620988473.

The spelling of 3867091 in words is "three million, eight hundred sixty-seven thousand, ninety-one".