284859 has 12 divisors (see below), whose sum is σ = 425152. Its totient is φ = 183600.

The previous prime is 284857. The next prime is 284881. The reversal of 284859 is 958482.

It is not a de Polignac number, because 284859 - 2¹ = 284857 is a prime.

It is a super-2 number, since 2×284859² = 162289299762, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 16.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 284859.

It is not an unprimeable number, because it can be changed into a prime (284857) 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, 232 + ... + 789.

2²⁸⁴⁸⁵⁹ is an apocalyptic number.

284859 is a deficient number, since it is larger than the sum of its proper divisors (140293).

284859 is a wasteful number, since it uses less digits than its factorization.

284859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1058 (or 1055 counting only the distinct ones).

The product of its digits is 23040, while the sum is 36.

The square root of 284859 is about 533.7218376645. The cubic root of 284859 is about 65.7975892417.

The spelling of 284859 in words is "two hundred eighty-four thousand, eight hundred fifty-nine".