345239 has 4 divisors (see below), whose sum is σ = 346656. Its totient is φ = 343824.

The previous prime is 345229. The next prime is 345259. The reversal of 345239 is 932543.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 932543 = 719 ⋅1297.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-345239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 239 + ... + 864.

It is an arithmetic number, because the mean of its divisors is an integer number (86664).

2³⁴⁵²³⁹ is an apocalyptic number.

345239 is a deficient number, since it is larger than the sum of its proper divisors (1417).

345239 is a wasteful number, since it uses less digits than its factorization.

345239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1416.

The product of its digits is 3240, while the sum is 26.

The square root of 345239 is about 587.5704213114. The cubic root of 345239 is about 70.1519827043.

The spelling of 345239 in words is "three hundred forty-five thousand, two hundred thirty-nine".