472805569 has 2 divisors, whose sum is σ = 472805570. Its totient is φ = 472805568.

The previous prime is 472805407. The next prime is 472805621. The reversal of 472805569 is 965508274.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 413715600 + 59089969 = 20340^2 + 7687^2 .

It is a cyclic number.

It is not a de Polignac number, because 472805569 - 2⁹ = 472805057 is a prime.

It is a super-2 number, since 2×472805569² = 447090212154827522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (472802569) 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, 236402784 + 236402785.

It is an arithmetic number, because the mean of its divisors is an integer number (236402785).

Almost surely, 2^472805569 is an apocalyptic number.

It is an amenable number.

472805569 is a deficient number, since it is larger than the sum of its proper divisors (1).

472805569 is an equidigital number, since it uses as much as digits as its factorization.

472805569 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 604800, while the sum is 46.

The square root of 472805569 is about 21744.0927380289. The cubic root of 472805569 is about 779.0419801790.

It can be divided in two parts, 472805 and 569, that added together give a palindrome (473374).

The spelling of 472805569 in words is "four hundred seventy-two million, eight hundred five thousand, five hundred sixty-nine".