285479773 has 2 divisors, whose sum is σ = 285479774. Its totient is φ = 285479772.

The previous prime is 285479743. The next prime is 285479791. The reversal of 285479773 is 377974582.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 274962724 + 10517049 = 16582^2 + 3243^2 .

It is a cyclic number.

It is not a de Polignac number, because 285479773 - 2¹³ = 285471581 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 285479773.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (285479743) 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 as a sum of consecutive naturals, namely, 142739886 + 142739887.

It is an arithmetic number, because the mean of its divisors is an integer number (142739887).

Almost surely, 2^285479773 is an apocalyptic number.

It is an amenable number.

285479773 is a deficient number, since it is larger than the sum of its proper divisors (1).

285479773 is an equidigital number, since it uses as much as digits as its factorization.

285479773 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2963520, while the sum is 52.

The square root of 285479773 is about 16896.1466908878. The cubic root of 285479773 is about 658.4535056950.

The spelling of 285479773 in words is "two hundred eighty-five million, four hundred seventy-nine thousand, seven hundred seventy-three".