343839 has 4 divisors (see below), whose sum is σ = 458456. Its totient is φ = 229224.

The previous prime is 343831. The next prime is 343891. The reversal of 343839 is 938343.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 343839 - 2³ = 343831 is a prime.

It is a D-number.

It is a Duffinian number.

343839 is a lucky number.

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 343839.

It is not an unprimeable number, because it can be changed into a prime (343831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57304 + ... + 57309.

It is an arithmetic number, because the mean of its divisors is an integer number (114614).

2³⁴³⁸³⁹ is an apocalyptic number.

343839 is a deficient number, since it is larger than the sum of its proper divisors (114617).

343839 is a wasteful number, since it uses less digits than its factorization.

343839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114616.

The product of its digits is 7776, while the sum is 30.

The square root of 343839 is about 586.3778645208. The cubic root of 343839 is about 70.0570283568.

The spelling of 343839 in words is "three hundred forty-three thousand, eight hundred thirty-nine".