284849 has 4 divisors (see below), whose sum is σ = 285936. Its totient is φ = 283764.

The previous prime is 284839. The next prime is 284857. The reversal of 284849 is 948482.

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, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 948482 = 2 ⋅474241.

It is a cyclic number.

It is not a de Polignac number, because 284849 - 2⁴ = 284833 is a prime.

It is a super-2 number, since 2×284849² = 162277905602, which contains 22 as substring.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 284849.

It is not an unprimeable number, because it can be changed into a prime (284819) 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, 122 + ... + 764.

It is an arithmetic number, because the mean of its divisors is an integer number (71484).

2²⁸⁴⁸⁴⁹ is an apocalyptic number.

It is an amenable number.

284849 is a deficient number, since it is larger than the sum of its proper divisors (1087).

284849 is an equidigital number, since it uses as much as digits as its factorization.

284849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1086.

The product of its digits is 18432, while the sum is 35.

The square root of 284849 is about 533.7124694065. The cubic root of 284849 is about 65.7968192893.

The spelling of 284849 in words is "two hundred eighty-four thousand, eight hundred forty-nine".