834221 has 2 divisors, whose sum is σ = 834222. Its totient is φ = 834220.

The previous prime is 834199. The next prime is 834257. The reversal of 834221 is 122438.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 570025 + 264196 = 755^2 + 514^2 .

It is a cyclic number.

It is not a de Polignac number, because 834221 - 2¹⁰ = 833197 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 834193 and 834202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (834721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 417110 + 417111.

It is an arithmetic number, because the mean of its divisors is an integer number (417111).

2⁸³⁴²²¹ is an apocalyptic number.

It is an amenable number.

834221 is a deficient number, since it is larger than the sum of its proper divisors (1).

834221 is an equidigital number, since it uses as much as digits as its factorization.

834221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 384, while the sum is 20.

The square root of 834221 is about 913.3569948273. The cubic root of 834221 is about 94.1370040839.

Adding to 834221 its reverse (122438), we get a palindrome (956659).

The spelling of 834221 in words is "eight hundred thirty-four thousand, two hundred twenty-one".