285495089 has 16 divisors (see below), whose sum is σ = 324487680. Its totient is φ = 248832000.

The previous prime is 285495037. The next prime is 285495131. The reversal of 285495089 is 980594582.

It is a cyclic number.

It is not a de Polignac number, because 285495089 - 2²⁸ = 17059633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (285495289) 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 15 ways as a sum of consecutive naturals, for example, 33329 + ... + 41009.

It is an arithmetic number, because the mean of its divisors is an integer number (20280480).

Almost surely, 2^285495089 is an apocalyptic number.

It is an amenable number.

285495089 is a deficient number, since it is larger than the sum of its proper divisors (38992591).

285495089 is a wasteful number, since it uses less digits than its factorization.

285495089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7832.

The product of its (nonzero) digits is 1036800, while the sum is 50.

The square root of 285495089 is about 16896.5999242451. The cubic root of 285495089 is about 658.4652808358.

The spelling of 285495089 in words is "two hundred eighty-five million, four hundred ninety-five thousand, eighty-nine".