284399 has 4 divisors (see below), whose sum is σ = 286080. Its totient is φ = 282720.

The previous prime is 284387. The next prime is 284407. The reversal of 284399 is 993482.

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

It is a cyclic number.

It is not a de Polignac number, because 284399 - 2¹² = 280303 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (284369) 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, 554 + ... + 935.

It is an arithmetic number, because the mean of its divisors is an integer number (71520).

2²⁸⁴³⁹⁹ is an apocalyptic number.

284399 is a deficient number, since it is larger than the sum of its proper divisors (1681).

284399 is a wasteful number, since it uses less digits than its factorization.

284399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1680.

The product of its digits is 15552, while the sum is 35.

The square root of 284399 is about 533.2907274649. The cubic root of 284399 is about 65.7621527653.

The spelling of 284399 in words is "two hundred eighty-four thousand, three hundred ninety-nine".