491648099 has 2 divisors, whose sum is σ = 491648100. Its totient is φ = 491648098.

The previous prime is 491648083. The next prime is 491648117. The reversal of 491648099 is 990846194.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 491648099 - 2⁴ = 491648083 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (491648029) 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, 245824049 + 245824050.

It is an arithmetic number, because the mean of its divisors is an integer number (245824050).

Almost surely, 2^491648099 is an apocalyptic number.

491648099 is a deficient number, since it is larger than the sum of its proper divisors (1).

491648099 is an equidigital number, since it uses as much as digits as its factorization.

491648099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 559872, while the sum is 50.

The square root of 491648099 is about 22173.1391327435. The cubic root of 491648099 is about 789.2564167067.

The spelling of 491648099 in words is "four hundred ninety-one million, six hundred forty-eight thousand, ninety-nine".