3404221 has 2 divisors, whose sum is σ = 3404222. Its totient is φ = 3404220.

The previous prime is 3404213. The next prime is 3404239. The reversal of 3404221 is 1224043.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3404025 + 196 = 1845^2 + 14^2 .

It is a cyclic number.

It is not a de Polignac number, because 3404221 - 2³ = 3404213 is a prime.

3404221 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 3404195 and 3404204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3404201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1702110 + 1702111.

It is an arithmetic number, because the mean of its divisors is an integer number (1702111).

Almost surely, 2^3404221 is an apocalyptic number.

It is an amenable number.

3404221 is a deficient number, since it is larger than the sum of its proper divisors (1).

3404221 is an equidigital number, since it uses as much as digits as its factorization.

3404221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 3404221 is about 1845.0531157666. The cubic root of 3404221 is about 150.4316603080.

Adding to 3404221 its reverse (1224043), we get a palindrome (4628264).

The spelling of 3404221 in words is "three million, four hundred four thousand, two hundred twenty-one".