3221009 has 4 divisors (see below), whose sum is σ = 3513840. Its totient is φ = 2928180.

The previous prime is 3220967. The next prime is 3221017. The reversal of 3221009 is 9001223.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3221009 - 2¹⁶ = 3155473 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (3221069) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 146399 + ... + 146420.

It is an arithmetic number, because the mean of its divisors is an integer number (878460).

Almost surely, 2^3221009 is an apocalyptic number.

It is an amenable number.

3221009 is a deficient number, since it is larger than the sum of its proper divisors (292831).

3221009 is a wasteful number, since it uses less digits than its factorization.

3221009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292830.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 3221009 is about 1794.7169693297. The cubic root of 3221009 is about 147.6830476647.

It can be divided in two parts, 322 and 1009, that added together give a palindrome (1331).

The spelling of 3221009 in words is "three million, two hundred twenty-one thousand, nine".