349839 has 20 divisors (see below), whose sum is σ = 598224. Its totient is φ = 199584.

The previous prime is 349837. The next prime is 349841. The reversal of 349839 is 938943.

It is an interprime number because it is at equal distance from previous prime (349837) and next prime (349841).

It is not a de Polignac number, because 349839 - 2¹ = 349837 is a prime.

It is an Ulam number.

349839 is a lucky number.

It is a plaindrome in base 16.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 349839.

It is not an unprimeable number, because it can be changed into a prime (349831) 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 in 19 ways as a sum of consecutive naturals, for example, 259 + ... + 875.

2³⁴⁹⁸³⁹ is an apocalyptic number.

349839 is a deficient number, since it is larger than the sum of its proper divisors (248385).

349839 is an equidigital number, since it uses as much as digits as its factorization.

349839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 636 (or 627 counting only the distinct ones).

The product of its digits is 23328, while the sum is 36.

The square root of 349839 is about 591.4718928233. The cubic root of 349839 is about 70.4621798053.

The spelling of 349839 in words is "three hundred forty-nine thousand, eight hundred thirty-nine".