3968209 has 8 divisors (see below), whose sum is σ = 4603328. Its totient is φ = 3350160.

The previous prime is 3968203. The next prime is 3968219. The reversal of 3968209 is 9028693.

3968209 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3968209 - 2³ = 3968201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3968201) 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 in 7 ways as a sum of consecutive naturals, for example, 3762 + ... + 4699.

It is an arithmetic number, because the mean of its divisors is an integer number (575416).

Almost surely, 2^3968209 is an apocalyptic number.

It is an amenable number.

3968209 is a deficient number, since it is larger than the sum of its proper divisors (635119).

3968209 is an equidigital number, since it uses as much as digits as its factorization.

3968209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8535.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 3968209 is about 1992.0363952498. The cubic root of 3968209 is about 158.3184439061.

The spelling of 3968209 in words is "three million, nine hundred sixty-eight thousand, two hundred nine".