285349 has 4 divisors (see below), whose sum is σ = 289440. Its totient is φ = 281260.

The previous prime is 285343. The next prime is 285377. The reversal of 285349 is 943582.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 943582 = 2 ⋅471791.

It is a cyclic number.

It is not a de Polignac number, because 285349 - 2⁵ = 285317 is a prime.

It is a d-powerful number, because it can be written as 2¹⁶ + 8⁴ + 3¹¹ + 5⁶ + 4⁷ + 9⁴ .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 285349.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285343) 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, 1939 + ... + 2080.

It is an arithmetic number, because the mean of its divisors is an integer number (72360).

2²⁸⁵³⁴⁹ is an apocalyptic number.

It is an amenable number.

285349 is a deficient number, since it is larger than the sum of its proper divisors (4091).

285349 is an equidigital number, since it uses as much as digits as its factorization.

285349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4090.

The product of its digits is 8640, while the sum is 31.

The square root of 285349 is about 534.1806810434. The cubic root of 285349 is about 65.8352948551.

The spelling of 285349 in words is "two hundred eighty-five thousand, three hundred forty-nine".