3423221 has 4 divisors (see below), whose sum is σ = 3427200. Its totient is φ = 3419244.

The previous prime is 3423191. The next prime is 3423223. The reversal of 3423221 is 1223243.

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, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1223243 = 7 ⋅174749.

It is a cyclic number.

It is not a de Polignac number, because 3423221 - 2⁶ = 3423157 is a prime.

It is a d-powerful number, because it can be written as 3 + 4⁹ + 2¹³ + 3¹² + 2¹⁹ + 2²¹ + 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 3423221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3423223) 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, 101 + ... + 2618.

It is an arithmetic number, because the mean of its divisors is an integer number (856800).

Almost surely, 2^3423221 is an apocalyptic number.

It is an amenable number.

3423221 is a deficient number, since it is larger than the sum of its proper divisors (3979).

3423221 is a wasteful number, since it uses less digits than its factorization.

3423221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3978.

The product of its digits is 288, while the sum is 17.

The square root of 3423221 is about 1850.1948546032. The cubic root of 3423221 is about 150.7110096289.

Adding to 3423221 its reverse (1223243), we get a palindrome (4646464).

The spelling of 3423221 in words is "three million, four hundred twenty-three thousand, two hundred twenty-one".