349297229 has 2 divisors, whose sum is σ = 349297230. Its totient is φ = 349297228.

The previous prime is 349297219. The next prime is 349297231. The reversal of 349297229 is 922792943.

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., 293197129 + 56100100 = 17123^2 + 7490^2 .

It is a cyclic number.

It is not a de Polignac number, because 349297229 - 2⁸ = 349296973 is a prime.

It is a Sophie Germain prime.

Together with 349297231, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (349297219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174648614 + 174648615.

It is an arithmetic number, because the mean of its divisors is an integer number (174648615).

Almost surely, 2^349297229 is an apocalyptic number.

It is an amenable number.

349297229 is a deficient number, since it is larger than the sum of its proper divisors (1).

349297229 is an equidigital number, since it uses as much as digits as its factorization.

349297229 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 489888, while the sum is 47.

The square root of 349297229 is about 18689.4951510200. The cubic root of 349297229 is about 704.2578774247.

The spelling of 349297229 in words is "three hundred forty-nine million, two hundred ninety-seven thousand, two hundred twenty-nine".