284939 has 4 divisors (see below), whose sum is σ = 288456. Its totient is φ = 281424.

The previous prime is 284927. The next prime is 284957. The reversal of 284939 is 939482.

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 284939 - 2¹² = 280843 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 284899 and 284908.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 284939.

It is not an unprimeable number, because it can be changed into a prime (284969) 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, 1634 + ... + 1799.

It is an arithmetic number, because the mean of its divisors is an integer number (72114).

2²⁸⁴⁹³⁹ is an apocalyptic number.

284939 is a deficient number, since it is larger than the sum of its proper divisors (3517).

284939 is an equidigital number, since it uses as much as digits as its factorization.

284939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3516.

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

The square root of 284939 is about 533.7967778097. The cubic root of 284939 is about 65.8037482121.

It can be divided in two parts, 2849 and 39, that multiplied together give a palindrome (111111).

The spelling of 284939 in words is "two hundred eighty-four thousand, nine hundred thirty-nine".