348209 has 2 divisors, whose sum is σ = 348210. Its totient is φ = 348208.

The previous prime is 348191. The next prime is 348217. The reversal of 348209 is 902843.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 327184 + 21025 = 572^2 + 145^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-348209 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (348239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174104 + 174105.

It is an arithmetic number, because the mean of its divisors is an integer number (174105).

2³⁴⁸²⁰⁹ is an apocalyptic number.

It is an amenable number.

348209 is a deficient number, since it is larger than the sum of its proper divisors (1).

348209 is an equidigital number, since it uses as much as digits as its factorization.

348209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 348209 is about 590.0923656513. The cubic root of 348209 is about 70.3525749161.

The spelling of 348209 in words is "three hundred forty-eight thousand, two hundred nine".