499809313 has 2 divisors, whose sum is σ = 499809314. Its totient is φ = 499809312.

The previous prime is 499809293. The next prime is 499809337. The reversal of 499809313 is 313908994.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 493372944 + 6436369 = 22212^2 + 2537^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-499809313 is a prime.

It is not a weakly prime, because it can be changed into another prime (499809613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249904656 + 249904657.

It is an arithmetic number, because the mean of its divisors is an integer number (249904657).

Almost surely, 2^499809313 is an apocalyptic number.

It is an amenable number.

499809313 is a deficient number, since it is larger than the sum of its proper divisors (1).

499809313 is an equidigital number, since it uses as much as digits as its factorization.

499809313 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 209952, while the sum is 46.

The square root of 499809313 is about 22356.4154774418. The cubic root of 499809313 is about 793.5996142398.

The spelling of 499809313 in words is "four hundred ninety-nine million, eight hundred nine thousand, three hundred thirteen".