491344907 has 2 divisors, whose sum is σ = 491344908. Its totient is φ = 491344906.

The previous prime is 491344879. The next prime is 491344937. The reversal of 491344907 is 709443194.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 491344907 - 2²⁸ = 222909451 is a prime.

It is not a weakly prime, because it can be changed into another prime (491344937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245672453 + 245672454.

It is an arithmetic number, because the mean of its divisors is an integer number (245672454).

Almost surely, 2^491344907 is an apocalyptic number.

491344907 is a deficient number, since it is larger than the sum of its proper divisors (1).

491344907 is an equidigital number, since it uses as much as digits as its factorization.

491344907 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 491344907 is about 22166.3011573875. The cubic root of 491344907 is about 789.0941424846.

The spelling of 491344907 in words is "four hundred ninety-one million, three hundred forty-four thousand, nine hundred seven".