285885349 has 4 divisors (see below), whose sum is σ = 291968064. Its totient is φ = 279802636.

The previous prime is 285885307. The next prime is 285885373. The reversal of 285885349 is 943588582.

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.

It is a cyclic number.

It is not a de Polignac number, because 285885349 - 2¹⁹ = 285361061 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 285885296 and 285885305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285885949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3041287 + ... + 3041380.

It is an arithmetic number, because the mean of its divisors is an integer number (72992016).

Almost surely, 2^285885349 is an apocalyptic number.

It is an amenable number.

285885349 is a deficient number, since it is larger than the sum of its proper divisors (6082715).

285885349 is an equidigital number, since it uses as much as digits as its factorization.

285885349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6082714.

The product of its digits is 2764800, while the sum is 52.

The square root of 285885349 is about 16908.1444576275. The cubic root of 285885349 is about 658.7651758473.

The spelling of 285885349 in words is "two hundred eighty-five million, eight hundred eighty-five thousand, three hundred forty-nine".