491424317 has 2 divisors, whose sum is σ = 491424318. Its totient is φ = 491424316.

The previous prime is 491424313. The next prime is 491424359. The reversal of 491424317 is 713424194.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 364771801 + 126652516 = 19099^2 + 11254^2 .

It is a cyclic number.

It is not a de Polignac number, because 491424317 - 2² = 491424313 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (491424313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245712158 + 245712159.

It is an arithmetic number, because the mean of its divisors is an integer number (245712159).

Almost surely, 2^491424317 is an apocalyptic number.

It is an amenable number.

491424317 is a deficient number, since it is larger than the sum of its proper divisors (1).

491424317 is an equidigital number, since it uses as much as digits as its factorization.

491424317 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24192, while the sum is 35.

The square root of 491424317 is about 22168.0923175631. The cubic root of 491424317 is about 789.1366507033.

The spelling of 491424317 in words is "four hundred ninety-one million, four hundred twenty-four thousand, three hundred seventeen".