485587309 has 2 divisors, whose sum is σ = 485587310. Its totient is φ = 485587308.

The previous prime is 485587279. The next prime is 485587327. The reversal of 485587309 is 903785584.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 286354084 + 199233225 = 16922^2 + 14115^2 .

It is a cyclic number.

It is not a de Polignac number, because 485587309 - 2¹³ = 485579117 is a prime.

It is a super-2 number, since 2×485587309² = 471590069323722962, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (485587369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 242793654 + 242793655.

It is an arithmetic number, because the mean of its divisors is an integer number (242793655).

Almost surely, 2^485587309 is an apocalyptic number.

It is an amenable number.

485587309 is a deficient number, since it is larger than the sum of its proper divisors (1).

485587309 is an equidigital number, since it uses as much as digits as its factorization.

485587309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1209600, while the sum is 49.

The square root of 485587309 is about 22036.0456752113. The cubic root of 485587309 is about 785.9998127753. Note that the first 3 decimals are identical.

The spelling of 485587309 in words is "four hundred eighty-five million, five hundred eighty-seven thousand, three hundred nine".