499680041309 has 2 divisors, whose sum is σ = 499680041310. Its totient is φ = 499680041308.

The previous prime is 499680041243. The next prime is 499680041323. The reversal of 499680041309 is 903140086994.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 431977562500 + 67702478809 = 657250^2 + 260197^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-499680041309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (499680041339) 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 as a sum of consecutive naturals, namely, 249840020654 + 249840020655.

It is an arithmetic number, because the mean of its divisors is an integer number (249840020655).

Almost surely, 2^499680041309 is an apocalyptic number.

It is an amenable number.

499680041309 is a deficient number, since it is larger than the sum of its proper divisors (1).

499680041309 is an equidigital number, since it uses as much as digits as its factorization.

499680041309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1679616, while the sum is 53.

The spelling of 499680041309 in words is "four hundred ninety-nine billion, six hundred eighty million, forty-one thousand, three hundred nine".