3435221 has 2 divisors, whose sum is σ = 3435222. Its totient is φ = 3435220.

The previous prime is 3435197. The next prime is 3435233. The reversal of 3435221 is 1225343.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2856100 + 579121 = 1690^2 + 761^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3435221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3435193 and 3435202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3435251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1717610 + 1717611.

It is an arithmetic number, because the mean of its divisors is an integer number (1717611).

Almost surely, 2^3435221 is an apocalyptic number.

It is an amenable number.

3435221 is a deficient number, since it is larger than the sum of its proper divisors (1).

3435221 is an equidigital number, since it uses as much as digits as its factorization.

3435221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 720, while the sum is 20.

The square root of 3435221 is about 1853.4349192783. The cubic root of 3435221 is about 150.8869085819.

The spelling of 3435221 in words is "three million, four hundred thirty-five thousand, two hundred twenty-one".