3189221 has 4 divisors (see below), whose sum is σ = 3644832. Its totient is φ = 2733612.

The previous prime is 3189191. The next prime is 3189227. The reversal of 3189221 is 1229813.

3189221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 not a de Polignac number, because 3189221 - 2¹⁴ = 3172837 is a prime.

It is a super-2 number, since 2×3189221² = 20342261173682, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3189227) 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 3 ways as a sum of consecutive naturals, for example, 227795 + ... + 227808.

It is an arithmetic number, because the mean of its divisors is an integer number (911208).

Almost surely, 2^3189221 is an apocalyptic number.

It is an amenable number.

3189221 is a deficient number, since it is larger than the sum of its proper divisors (455611).

3189221 is an equidigital number, since it uses as much as digits as its factorization.

3189221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455610.

The product of its digits is 864, while the sum is 26.

The square root of 3189221 is about 1785.8390185008. The cubic root of 3189221 is about 147.1956147530.

It can be divided in two parts, 31892 and 21, that added together give a palindrome (31913).

The spelling of 3189221 in words is "three million, one hundred eighty-nine thousand, two hundred twenty-one".