340839 has 6 divisors (see below), whose sum is σ = 492336. Its totient is φ = 227220.

The previous prime is 340819. The next prime is 340849. The reversal of 340839 is 938043.

It is not a de Polignac number, because 340839 - 2⁸ = 340583 is a prime.

It is a d-powerful number, because it can be written as 3⁹ + 4⁹ + 8⁵ + 0 + 3⁹ + 9⁴ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340819) 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 5 ways as a sum of consecutive naturals, for example, 18927 + ... + 18944.

It is an arithmetic number, because the mean of its divisors is an integer number (82056).

2³⁴⁰⁸³⁹ is an apocalyptic number.

340839 is a deficient number, since it is larger than the sum of its proper divisors (151497).

340839 is a wasteful number, since it uses less digits than its factorization.

340839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37877 (or 37874 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 340839 is about 583.8141827671. The cubic root of 340839 is about 69.8526833835.

The spelling of 340839 in words is "three hundred forty thousand, eight hundred thirty-nine".