499802909 has 2 divisors, whose sum is σ = 499802910. Its totient is φ = 499802908.

The previous prime is 499802887. The next prime is 499802921. The reversal of 499802909 is 909208994.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 466128100 + 33674809 = 21590^2 + 5803^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-499802909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (499802939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249901454 + 249901455.

It is an arithmetic number, because the mean of its divisors is an integer number (249901455).

Almost surely, 2^499802909 is an apocalyptic number.

It is an amenable number.

499802909 is a deficient number, since it is larger than the sum of its proper divisors (1).

499802909 is an equidigital number, since it uses as much as digits as its factorization.

499802909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 419904, while the sum is 50.

The square root of 499802909 is about 22356.2722518760. The cubic root of 499802909 is about 793.5962247914.

The spelling of 499802909 in words is "four hundred ninety-nine million, eight hundred two thousand, nine hundred nine".