285959 has 4 divisors (see below), whose sum is σ = 298416. Its totient is φ = 273504.

The previous prime is 285953. The next prime is 285977. The reversal of 285959 is 959582.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-285959 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

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 285959.

It is not an unprimeable number, because it can be changed into a prime (285953) 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, 6194 + ... + 6239.

It is an arithmetic number, because the mean of its divisors is an integer number (74604).

2²⁸⁵⁹⁵⁹ is an apocalyptic number.

285959 is a deficient number, since it is larger than the sum of its proper divisors (12457).

285959 is a wasteful number, since it uses less digits than its factorization.

285959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12456.

The product of its digits is 32400, while the sum is 38.

The square root of 285959 is about 534.7513440843. The cubic root of 285959 is about 65.8821742286.

The spelling of 285959 in words is "two hundred eighty-five thousand, nine hundred fifty-nine".