284289 has 8 divisors (see below), whose sum is σ = 381792. Its totient is φ = 188160.

The previous prime is 284269. The next prime is 284293. The reversal of 284289 is 982482.

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

It is not a de Polignac number, because 284289 - 2⁷ = 284161 is a prime.

It is not an unprimeable number, because it can be changed into a prime (284269) 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 7 ways as a sum of consecutive naturals, for example, 334 + ... + 824.

It is an arithmetic number, because the mean of its divisors is an integer number (47724).

2²⁸⁴²⁸⁹ is an apocalyptic number.

It is an amenable number.

284289 is a deficient number, since it is larger than the sum of its proper divisors (97503).

284289 is a wasteful number, since it uses less digits than its factorization.

284289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 687.

The product of its digits is 9216, while the sum is 33.

The square root of 284289 is about 533.1875842515. The cubic root of 284289 is about 65.7536731648.

The spelling of 284289 in words is "two hundred eighty-four thousand, two hundred eighty-nine".