3009221 has 4 divisors (see below), whose sum is σ = 3186252. Its totient is φ = 2832192.

The previous prime is 3009203. The next prime is 3009233. The reversal of 3009221 is 1229003.

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 801025 + 2208196 = 895^2 + 1486^2 .

It is a cyclic number.

It is not a de Polignac number, because 3009221 - 2⁶ = 3009157 is a prime.

It is a super-2 number, since 2×3009221² = 18110822053682, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 177013 = 3009221 / (3 + 0 + 0 + 9 + 2 + 2 + 1).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3009221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3009241) 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, 88490 + ... + 88523.

It is an arithmetic number, because the mean of its divisors is an integer number (796563).

Almost surely, 2^3009221 is an apocalyptic number.

It is an amenable number.

3009221 is a deficient number, since it is larger than the sum of its proper divisors (177031).

3009221 is a wasteful number, since it uses less digits than its factorization.

3009221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177030.

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

The square root of 3009221 is about 1734.7106386945. The cubic root of 3009221 is about 144.3725723747.

The spelling of 3009221 in words is "three million, nine thousand, two hundred twenty-one".