339981 has 4 divisors (see below), whose sum is σ = 453312. Its totient is φ = 226652.

The previous prime is 339959. The next prime is 339991. The reversal of 339981 is 189933.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 189933 = 3 ⋅63311.

It is a cyclic number.

It is not a de Polignac number, because 339981 - 2¹⁴ = 323597 is a prime.

It is a super-2 number, since 2×339981² = 231174160722, which contains 22 as substring.

It is a D-number.

It is a nialpdrome in base 13.

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 339981.

It is not an unprimeable number, because it can be changed into a prime (339991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56661 + ... + 56666.

It is an arithmetic number, because the mean of its divisors is an integer number (113328).

2³³⁹⁹⁸¹ is an apocalyptic number.

It is an amenable number.

339981 is a deficient number, since it is larger than the sum of its proper divisors (113331).

339981 is a wasteful number, since it uses less digits than its factorization.

339981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113330.

The product of its digits is 5832, while the sum is 33.

The square root of 339981 is about 583.0788968913. The cubic root of 339981 is about 69.7940203360.

The spelling of 339981 in words is "three hundred thirty-nine thousand, nine hundred eighty-one".