3321209 has 4 divisors (see below), whose sum is σ = 3332004. Its totient is φ = 3310416.

The previous prime is 3321203. The next prime is 3321217. The reversal of 3321209 is 9021233.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1210000 + 2111209 = 1100^2 + 1453^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3321209 is a prime.

It is a super-2 number, since 2×3321209² = 22060858443362, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3321203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4922 + ... + 5555.

It is an arithmetic number, because the mean of its divisors is an integer number (833001).

Almost surely, 2^3321209 is an apocalyptic number.

It is an amenable number.

3321209 is a deficient number, since it is larger than the sum of its proper divisors (10795).

3321209 is a wasteful number, since it uses less digits than its factorization.

3321209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10794.

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 3321209 is about 1822.4184481068. The cubic root of 3321209 is about 149.1988247026.

The spelling of 3321209 in words is "three million, three hundred twenty-one thousand, two hundred nine".