349709 has 2 divisors, whose sum is σ = 349710. Its totient is φ = 349708.

The previous prime is 349697. The next prime is 349717. The reversal of 349709 is 907943.

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., 334084 + 15625 = 578^2 + 125^2 .

It is a cyclic number.

It is not a de Polignac number, because 349709 - 2¹⁶ = 284173 is a prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (349729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174854 + 174855.

It is an arithmetic number, because the mean of its divisors is an integer number (174855).

2³⁴⁹⁷⁰⁹ is an apocalyptic number.

It is an amenable number.

349709 is a deficient number, since it is larger than the sum of its proper divisors (1).

349709 is an equidigital number, since it uses as much as digits as its factorization.

349709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6804, while the sum is 32.

The square root of 349709 is about 591.3619872802. The cubic root of 349709 is about 70.4534508202.

The spelling of 349709 in words is "three hundred forty-nine thousand, seven hundred nine".