485699309 has 4 divisors (see below), whose sum is σ = 486209916. Its totient is φ = 485188704.

The previous prime is 485699297. The next prime is 485699311. The reversal of 485699309 is 903996584.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 68641225 + 417058084 = 8285^2 + 20422^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-485699309 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (485699369) 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 3 ways as a sum of consecutive naturals, for example, 253874 + ... + 255779.

It is an arithmetic number, because the mean of its divisors is an integer number (121552479).

Almost surely, 2^485699309 is an apocalyptic number.

It is an amenable number.

485699309 is a deficient number, since it is larger than the sum of its proper divisors (510607).

485699309 is an equidigital number, since it uses as much as digits as its factorization.

485699309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510606.

The product of its (nonzero) digits is 2099520, while the sum is 53.

The square root of 485699309 is about 22038.5868194855. The cubic root of 485699309 is about 786.0602380308.

The spelling of 485699309 in words is "four hundred eighty-five million, six hundred ninety-nine thousand, three hundred nine".