346424209 has 2 divisors, whose sum is σ = 346424210. Its totient is φ = 346424208.

The previous prime is 346424203. The next prime is 346424219. The reversal of 346424209 is 902424643.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 334999809 + 11424400 = 18303^2 + 3380^2 .

It is a cyclic number.

It is not a de Polignac number, because 346424209 - 2¹³ = 346416017 is a prime.

It is not a weakly prime, because it can be changed into another prime (346424203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 173212104 + 173212105.

It is an arithmetic number, because the mean of its divisors is an integer number (173212105).

Almost surely, 2^346424209 is an apocalyptic number.

It is an amenable number.

346424209 is a deficient number, since it is larger than the sum of its proper divisors (1).

346424209 is an equidigital number, since it uses as much as digits as its factorization.

346424209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 41472, while the sum is 34.

The square root of 346424209 is about 18612.4745533741. The cubic root of 346424209 is about 702.3216850480.

The spelling of 346424209 in words is "three hundred forty-six million, four hundred twenty-four thousand, two hundred nine".