339021 has 12 divisors (see below), whose sum is σ = 495040. Its totient is φ = 223560.

The previous prime is 338999. The next prime is 339023. The reversal of 339021 is 120933.

It is not a de Polignac number, because 339021 - 2⁷ = 338893 is a prime.

It is a super-2 number, since 2×339021² = 229870476882, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 338985 and 339003.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 339021.

It is not an unprimeable number, because it can be changed into a prime (339023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1116 + ... + 1386.

2³³⁹⁰²¹ is an apocalyptic number.

It is an amenable number.

339021 is a deficient number, since it is larger than the sum of its proper divisors (156019).

339021 is a wasteful number, since it uses less digits than its factorization.

339021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 416 (or 413 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

The square root of 339021 is about 582.2550987325. The cubic root of 339021 is about 69.7282662466.

Adding to 339021 its reverse (120933), we get a palindrome (459954).

The spelling of 339021 in words is "three hundred thirty-nine thousand, twenty-one".