338987 has 4 divisors (see below), whose sum is σ = 369816. Its totient is φ = 308160.

The previous prime is 338959. The next prime is 338993. The reversal of 338987 is 789833.

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

It is a cyclic number.

It is not a de Polignac number, because 338987 - 2⁸ = 338731 is a prime.

It is a super-2 number, since 2×338987² = 229824372338, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 338987.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 338987.

It is not an unprimeable number, because it can be changed into a prime (338927) 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, 15398 + ... + 15419.

It is an arithmetic number, because the mean of its divisors is an integer number (92454).

2³³⁸⁹⁸⁷ is an apocalyptic number.

338987 is a deficient number, since it is larger than the sum of its proper divisors (30829).

338987 is a wasteful number, since it uses less digits than its factorization.

338987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30828.

The product of its digits is 36288, while the sum is 38.

The square root of 338987 is about 582.2259011758. The cubic root of 338987 is about 69.7259351813.

The spelling of 338987 in words is "three hundred thirty-eight thousand, nine hundred eighty-seven".