485388009 has 12 divisors (see below), whose sum is σ = 707549700. Its totient is φ = 320622624.

The previous prime is 485387989. The next prime is 485388011. The reversal of 485388009 is 900883584.

It can be written as a sum of positive squares in 2 ways, for example, as 203148009 + 282240000 = 14253^2 + 16800^2 .

It is not a de Polignac number, because 485388009 - 2¹⁹ = 484863721 is a prime.

It is not an unprimeable number, because it can be changed into a prime (485380009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 246414 + ... + 248375.

It is an arithmetic number, because the mean of its divisors is an integer number (58962475).

Almost surely, 2^485388009 is an apocalyptic number.

It is an amenable number.

485388009 is a deficient number, since it is larger than the sum of its proper divisors (222161691).

485388009 is a wasteful number, since it uses less digits than its factorization.

485388009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494904 (or 494901 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 45.

The square root of 485388009 is about 22031.5230749034. The cubic root of 485388009 is about 785.8922652097.

The spelling of 485388009 in words is "four hundred eighty-five million, three hundred eighty-eight thousand, nine".