284609 has 4 divisors (see below), whose sum is σ = 306516. Its totient is φ = 262704.

The previous prime is 284593. The next prime is 284623. The reversal of 284609 is 906482.

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

It can be written as a sum of positive squares in 2 ways, for example, as 124609 + 160000 = 353^2 + 400^2 .

It is not a de Polignac number, because 284609 - 2⁴ = 284593 is a prime.

It is a Duffinian number.

It is a zygodrome in base 12.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 284609.

It is not an unprimeable number, because it can be changed into a prime (284659) 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, 10934 + ... + 10959.

It is an arithmetic number, because the mean of its divisors is an integer number (76629).

2²⁸⁴⁶⁰⁹ is an apocalyptic number.

It is an amenable number.

284609 is a deficient number, since it is larger than the sum of its proper divisors (21907).

284609 is a wasteful number, since it uses less digits than its factorization.

284609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21906.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 284609 is about 533.4875818611. The cubic root of 284609 is about 65.7783350237.

The spelling of 284609 in words is "two hundred eighty-four thousand, six hundred nine".