340039 has 8 divisors (see below), whose sum is σ = 401408. Its totient is φ = 281880.

The previous prime is 340037. The next prime is 340049. The reversal of 340039 is 930043.

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 340039 - 2¹ = 340037 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 339998 and 340025.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340031) 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, 567 + ... + 1000.

It is an arithmetic number, because the mean of its divisors is an integer number (50176).

2³⁴⁰⁰³⁹ is an apocalyptic number.

340039 is a deficient number, since it is larger than the sum of its proper divisors (61369).

340039 is a wasteful number, since it uses less digits than its factorization.

340039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1605.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 340039 is about 583.1286307497. The cubic root of 340039 is about 69.7979890117.

The spelling of 340039 in words is "three hundred forty thousand, thirty-nine".