499423000309 has 2 divisors, whose sum is σ = 499423000310. Its totient is φ = 499423000308.

The previous prime is 499423000217. The next prime is 499423000327. The reversal of 499423000309 is 903000324994.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 254170247409 + 245252752900 = 504153^2 + 495230^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-499423000309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (499423000379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249711500154 + 249711500155.

It is an arithmetic number, because the mean of its divisors is an integer number (249711500155).

Almost surely, 2^499423000309 is an apocalyptic number.

It is an amenable number.

499423000309 is a deficient number, since it is larger than the sum of its proper divisors (1).

499423000309 is an equidigital number, since it uses as much as digits as its factorization.

499423000309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 209952, while the sum is 43.

The spelling of 499423000309 in words is "four hundred ninety-nine billion, four hundred twenty-three million, three hundred nine", and thus it is an aban number.