285086911 has 2 divisors, whose sum is σ = 285086912. Its totient is φ = 285086910.

The previous prime is 285086843. The next prime is 285086927. The reversal of 285086911 is 119680582.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 285086911 - 2¹³ = 285078719 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (285086941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142543455 + 142543456.

It is an arithmetic number, because the mean of its divisors is an integer number (142543456).

Almost surely, 2^285086911 is an apocalyptic number.

285086911 is a deficient number, since it is larger than the sum of its proper divisors (1).

285086911 is an equidigital number, since it uses as much as digits as its factorization.

285086911 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34560, while the sum is 40.

The square root of 285086911 is about 16884.5169015877. The cubic root of 285086911 is about 658.1513242008.

The spelling of 285086911 in words is "two hundred eighty-five million, eighty-six thousand, nine hundred eleven".