284953 has 4 divisors (see below), whose sum is σ = 288640. Its totient is φ = 281268.

The previous prime is 284927. The next prime is 284957. The reversal of 284953 is 359482.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-284953 is a prime.

It is a Duffinian number.

284953 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (284957) 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, 1725 + ... + 1882.

It is an arithmetic number, because the mean of its divisors is an integer number (72160).

2²⁸⁴⁹⁵³ is an apocalyptic number.

It is an amenable number.

284953 is a deficient number, since it is larger than the sum of its proper divisors (3687).

284953 is an equidigital number, since it uses as much as digits as its factorization.

284953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3686.

The product of its digits is 8640, while the sum is 31.

The square root of 284953 is about 533.8098912534. The cubic root of 284953 is about 65.8048259134.

Subtracting 284953 from its reverse (359482), we obtain a square (74529 = 273²).

The spelling of 284953 in words is "two hundred eighty-four thousand, nine hundred fifty-three".