284979 has 4 divisors (see below), whose sum is σ = 379976. Its totient is φ = 189984.

The previous prime is 284969. The next prime is 284989. The reversal of 284979 is 979482.

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

It is an interprime number because it is at equal distance from previous prime (284969) and next prime (284989).

It is not a de Polignac number, because 284979 - 2⁸ = 284723 is a prime.

It is a D-number.

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 284979.

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, 47494 + ... + 47499.

It is an arithmetic number, because the mean of its divisors is an integer number (94994).

2²⁸⁴⁹⁷⁹ is an apocalyptic number.

284979 is a deficient number, since it is larger than the sum of its proper divisors (94997).

284979 is an equidigital number, since it uses as much as digits as its factorization.

284979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94996.

The product of its digits is 36288, while the sum is 39.

The square root of 284979 is about 533.8342439372. The cubic root of 284979 is about 65.8068272650.

The spelling of 284979 in words is "two hundred eighty-four thousand, nine hundred seventy-nine".