284239 has 8 divisors (see below), whose sum is σ = 300672. Its totient is φ = 268320.

The previous prime is 284237. The next prime is 284243. The reversal of 284239 is 932482.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 284239 - 2¹ = 284237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (284231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1557 + ... + 1729.

It is an arithmetic number, because the mean of its divisors is an integer number (37584).

2²⁸⁴²³⁹ is an apocalyptic number.

284239 is a deficient number, since it is larger than the sum of its proper divisors (16433).

284239 is a wasteful number, since it uses less digits than its factorization.

284239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257.

The product of its digits is 3456, while the sum is 28.

The square root of 284239 is about 533.1406943763. The cubic root of 284239 is about 65.7498180779.

It can be divided in two parts, 284 and 239, that multiplied together give a palindrome (67876).

The spelling of 284239 in words is "two hundred eighty-four thousand, two hundred thirty-nine".