499559791 has 2 divisors, whose sum is σ = 499559792. Its totient is φ = 499559790.

The previous prime is 499559783. The next prime is 499559831. The reversal of 499559791 is 197955994.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 499559791 - 2³ = 499559783 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (499551791) 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, 249779895 + 249779896.

It is an arithmetic number, because the mean of its divisors is an integer number (249779896).

Almost surely, 2^499559791 is an apocalyptic number.

499559791 is a deficient number, since it is larger than the sum of its proper divisors (1).

499559791 is an equidigital number, since it uses as much as digits as its factorization.

499559791 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4592700, while the sum is 58.

The square root of 499559791 is about 22350.8342349900. The cubic root of 499559791 is about 793.4675281823.

The spelling of 499559791 in words is "four hundred ninety-nine million, five hundred fifty-nine thousand, seven hundred ninety-one".