284479 has 8 divisors (see below), whose sum is σ = 311360. Its totient is φ = 258336.

The previous prime is 284477. The next prime is 284483. The reversal of 284479 is 974482.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 284479 - 2¹ = 284477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (284477) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 889 + ... + 1165.

It is an arithmetic number, because the mean of its divisors is an integer number (38920).

2²⁸⁴⁴⁷⁹ is an apocalyptic number.

284479 is a deficient number, since it is larger than the sum of its proper divisors (26881).

284479 is a wasteful number, since it uses less digits than its factorization.

284479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369.

The product of its digits is 16128, while the sum is 34.

The square root of 284479 is about 533.3657281828. The cubic root of 284479 is about 65.7683183742.

It can be divided in two parts, 2844 and 79, that multiplied together give a square (224676 = 474²).

The spelling of 284479 in words is "two hundred eighty-four thousand, four hundred seventy-nine".