284889 has 16 divisors (see below), whose sum is σ = 423360. Its totient is φ = 168960.

The previous prime is 284881. The next prime is 284897. The reversal of 284889 is 988482.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (284881) and next prime (284897).

It is not a de Polignac number, because 284889 - 2³ = 284881 is a prime.

It is a d-powerful number, because it can be written as 2¹⁴ + 8³ + 8⁴ + 4⁵ + 8⁶ + 9³ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (284881) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2889 + ... + 2985.

It is an arithmetic number, because the mean of its divisors is an integer number (26460).

2²⁸⁴⁸⁸⁹ is an apocalyptic number.

It is an amenable number.

284889 is a deficient number, since it is larger than the sum of its proper divisors (138471).

284889 is a wasteful number, since it uses less digits than its factorization.

284889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200.

The product of its digits is 36864, while the sum is 39.

The square root of 284889 is about 533.7499414520. The cubic root of 284889 is about 65.7998989907.

The spelling of 284889 in words is "two hundred eighty-four thousand, eight hundred eighty-nine".