285285943 has 2 divisors, whose sum is σ = 285285944. Its totient is φ = 285285942.

The previous prime is 285285877. The next prime is 285285953. The reversal of 285285943 is 349582582.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 285285943 - 2¹⁷ = 285154871 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 285285893 and 285285902.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (285285953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142642971 + 142642972.

It is an arithmetic number, because the mean of its divisors is an integer number (142642972).

Almost surely, 2^285285943 is an apocalyptic number.

285285943 is a deficient number, since it is larger than the sum of its proper divisors (1).

285285943 is an equidigital number, since it uses as much as digits as its factorization.

285285943 is an evil number, because the sum of its binary digits is even.

The product of its digits is 691200, while the sum is 46.

The square root of 285285943 is about 16890.4097937261. The cubic root of 285285943 is about 658.3044502559.

The spelling of 285285943 in words is "two hundred eighty-five million, two hundred eighty-five thousand, nine hundred forty-three".