285479 has 4 divisors (see below), whose sum is σ = 294720. Its totient is φ = 276240.

The previous prime is 285473. The next prime is 285497. The reversal of 285479 is 974582.

It is a happy number.

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 285479 - 2⁴ = 285463 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 285479.

It is not an unprimeable number, because it can be changed into a prime (285473) 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, 4574 + ... + 4635.

It is an arithmetic number, because the mean of its divisors is an integer number (73680).

2²⁸⁵⁴⁷⁹ is an apocalyptic number.

285479 is a deficient number, since it is larger than the sum of its proper divisors (9241).

285479 is an equidigital number, since it uses as much as digits as its factorization.

285479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9240.

The product of its digits is 20160, while the sum is 35.

The square root of 285479 is about 534.3023488625. The cubic root of 285479 is about 65.8452911391.

The spelling of 285479 in words is "two hundred eighty-five thousand, four hundred seventy-nine".