3964091 has 2 divisors, whose sum is σ = 3964092. Its totient is φ = 3964090.

The previous prime is 3964087. The next prime is 3964117. The reversal of 3964091 is 1904693.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3964091 - 2² = 3964087 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (3964021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1982045 + 1982046.

It is an arithmetic number, because the mean of its divisors is an integer number (1982046).

Almost surely, 2^3964091 is an apocalyptic number.

3964091 is a deficient number, since it is larger than the sum of its proper divisors (1).

3964091 is an equidigital number, since it uses as much as digits as its factorization.

3964091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 3964091 is about 1991.0025112993. The cubic root of 3964091 is about 158.2636600810.

The spelling of 3964091 in words is "three million, nine hundred sixty-four thousand, ninety-one".