340239 has 8 divisors (see below), whose sum is σ = 473472. Its totient is φ = 216920.

The previous prime is 340237. The next prime is 340261. The reversal of 340239 is 932043.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 340239 - 2¹ = 340237 is a prime.

It is a nialpdrome in base 13.

It is a zygodrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2397 + ... + 2534.

It is an arithmetic number, because the mean of its divisors is an integer number (59184).

2³⁴⁰²³⁹ is an apocalyptic number.

340239 is a deficient number, since it is larger than the sum of its proper divisors (133233).

340239 is a wasteful number, since it uses less digits than its factorization.

340239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4957.

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 340239 is about 583.3000942911. The cubic root of 340239 is about 69.8116706402.

The spelling of 340239 in words is "three hundred forty thousand, two hundred thirty-nine".