285359089 has 2 divisors, whose sum is σ = 285359090. Its totient is φ = 285359088.

The previous prime is 285359071. The next prime is 285359141. The reversal of 285359089 is 980953582.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 210830400 + 74528689 = 14520^2 + 8633^2 .

It is a cyclic number.

It is not a de Polignac number, because 285359089 - 2¹¹ = 285357041 is a prime.

It is not a weakly prime, because it can be changed into another prime (285359189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142679544 + 142679545.

It is an arithmetic number, because the mean of its divisors is an integer number (142679545).

Almost surely, 2^285359089 is an apocalyptic number.

It is an amenable number.

285359089 is a deficient number, since it is larger than the sum of its proper divisors (1).

285359089 is an equidigital number, since it uses as much as digits as its factorization.

285359089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 777600, while the sum is 49.

The square root of 285359089 is about 16892.5749665349. The cubic root of 285359089 is about 658.3607075231.

The spelling of 285359089 in words is "two hundred eighty-five million, three hundred fifty-nine thousand, eighty-nine".