499475309 has 2 divisors, whose sum is σ = 499475310. Its totient is φ = 499475308.

The previous prime is 499475303. The next prime is 499475341. The reversal of 499475309 is 903574994.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 350513284 + 148962025 = 18722^2 + 12205^2 .

It is a cyclic number.

It is not a de Polignac number, because 499475309 - 2¹⁶ = 499409773 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (499475303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249737654 + 249737655.

It is an arithmetic number, because the mean of its divisors is an integer number (249737655).

Almost surely, 2^499475309 is an apocalyptic number.

It is an amenable number.

499475309 is a deficient number, since it is larger than the sum of its proper divisors (1).

499475309 is an equidigital number, since it uses as much as digits as its factorization.

499475309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1224720, while the sum is 50.

The square root of 499475309 is about 22348.9442479953. The cubic root of 499475309 is about 793.4227971318.

The spelling of 499475309 in words is "four hundred ninety-nine million, four hundred seventy-five thousand, three hundred nine".