339987 has 4 divisors (see below), whose sum is σ = 453320. Its totient is φ = 226656.

The previous prime is 339959. The next prime is 339991. The reversal of 339987 is 789933.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 339987 - 2¹⁶ = 274451 is a prime.

It is an Ulam number.

It is a D-number.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 339987.

It is not an unprimeable number, because it can be changed into a prime (339907) 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, 56662 + ... + 56667.

It is an arithmetic number, because the mean of its divisors is an integer number (113330).

2³³⁹⁹⁸⁷ is an apocalyptic number.

339987 is a deficient number, since it is larger than the sum of its proper divisors (113333).

339987 is a wasteful number, since it uses less digits than its factorization.

339987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113332.

The product of its digits is 40824, while the sum is 39.

The square root of 339987 is about 583.0840419699. The cubic root of 339987 is about 69.7944309095.

It can be divided in two parts, 3399 and 87, that added together give a triangular number (3486 = T₈₃).

The spelling of 339987 in words is "three hundred thirty-nine thousand, nine hundred eighty-seven".