499295809 has 2 divisors, whose sum is σ = 499295810. Its totient is φ = 499295808.

The previous prime is 499295789. The next prime is 499295821. The reversal of 499295809 is 908592994.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 429940225 + 69355584 = 20735^2 + 8328^2 .

It is a cyclic number.

It is not a de Polignac number, because 499295809 - 2⁷ = 499295681 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 499295809.

It is not a weakly prime, because it can be changed into another prime (499295869) 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, 249647904 + 249647905.

It is an arithmetic number, because the mean of its divisors is an integer number (249647905).

Almost surely, 2^499295809 is an apocalyptic number.

It is an amenable number.

499295809 is a deficient number, since it is larger than the sum of its proper divisors (1).

499295809 is an equidigital number, since it uses as much as digits as its factorization.

499295809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2099520, while the sum is 55.

The square root of 499295809 is about 22344.9280374764. The cubic root of 499295809 is about 793.3277397427.

The spelling of 499295809 in words is "four hundred ninety-nine million, two hundred ninety-five thousand, eight hundred nine".