339 has 4 divisors (see below), whose sum is σ = 456.
Its totient is φ = 224.
The previous prime is 337. The next prime is 347. The reversal of 339 is 933.
Subtracting from 339 its sum of digits (15), we obtain a square (324 = 182).
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 933 = 3 ⋅311.
It is a cyclic number.
It is not a de Polignac number, because 339 - 21 = 337 is a prime.
It is a super-2 number, since 2×3392 = 229842, which contains 22 as substring.
It is an Ulam number.
It is a D-number.
339 is a lucky number.
It is a plaindrome in base 10, base 11 and base 15.
It is a nialpdrome in base 7.
It is not an unprimeable number, because it can be changed into a prime (331) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (5) of ones.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54 + ... + 59.
It is an arithmetic number, because the mean of its divisors is an integer number (114).
339 is a deficient number, since it is larger than the sum of its proper divisors (117).
339 is a wasteful number, since it uses less digits than its factorization.
339 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 116.
The product of its digits is 81, while the sum is 15.
The square root of 339 is about 18.4119526395.
The cubic root of 339 is about 6.9726826489.
The spelling of 339 in words is "three hundred thirty-nine", and thus it is an aban number and an oban number.