349397 has 2 divisors, whose sum is σ = 349398. Its totient is φ = 349396.

The previous prime is 349387. The next prime is 349399. The reversal of 349397 is 793943.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 303601 + 45796 = 551^2 + 214^2 .

It is a cyclic number.

It is not a de Polignac number, because 349397 - 2⁴ = 349381 is a prime.

Together with 349399, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (349399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174698 + 174699.

It is an arithmetic number, because the mean of its divisors is an integer number (174699).

2³⁴⁹³⁹⁷ is an apocalyptic number.

It is an amenable number.

349397 is a deficient number, since it is larger than the sum of its proper divisors (1).

349397 is an equidigital number, since it uses as much as digits as its factorization.

349397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20412, while the sum is 35.

The square root of 349397 is about 591.0981306010. The cubic root of 349397 is about 70.4324924262.

The spelling of 349397 in words is "three hundred forty-nine thousand, three hundred ninety-seven".