349859317 has 2 divisors, whose sum is σ = 349859318. Its totient is φ = 349859316.

The previous prime is 349859297. The next prime is 349859347. The reversal of 349859317 is 713958943.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 332478756 + 17380561 = 18234^2 + 4169^2 .

It is an emirp because it is prime and its reverse (713958943) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 349859317 - 2⁷ = 349859189 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (349859347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174929658 + 174929659.

It is an arithmetic number, because the mean of its divisors is an integer number (174929659).

Almost surely, 2^349859317 is an apocalyptic number.

It is an amenable number.

349859317 is a deficient number, since it is larger than the sum of its proper divisors (1).

349859317 is an equidigital number, since it uses as much as digits as its factorization.

349859317 is an evil number, because the sum of its binary digits is even.

The product of its digits is 816480, while the sum is 49.

The square root of 349859317 is about 18704.5266446387. The cubic root of 349859317 is about 704.6354381595.

The spelling of 349859317 in words is "three hundred forty-nine million, eight hundred fifty-nine thousand, three hundred seventeen".