499498817 has 2 divisors, whose sum is σ = 499498818. Its totient is φ = 499498816.

The previous prime is 499498781. The next prime is 499498919. The reversal of 499498817 is 718894994.

Together with previous prime (499498781) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 383807281 + 115691536 = 19591^2 + 10756^2 .

It is a cyclic number.

It is not a de Polignac number, because 499498817 - 2²⁰ = 498450241 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (499498717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249749408 + 249749409.

It is an arithmetic number, because the mean of its divisors is an integer number (249749409).

Almost surely, 2^499498817 is an apocalyptic number.

It is an amenable number.

499498817 is a deficient number, since it is larger than the sum of its proper divisors (1).

499498817 is an equidigital number, since it uses as much as digits as its factorization.

499498817 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5225472, while the sum is 59.

The square root of 499498817 is about 22349.4701726909. The cubic root of 499498817 is about 793.4352445208.

The spelling of 499498817 in words is "four hundred ninety-nine million, four hundred ninety-eight thousand, eight hundred seventeen".