491595797 has 32 divisors (see below), whose sum is σ = 654136320. Its totient is φ = 357851520.

The previous prime is 491595787. The next prime is 491595821. The reversal of 491595797 is 797595194.

It is a cyclic number.

It is not a de Polignac number, because 491595797 - 2⁸ = 491595541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491595757) 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 in 31 ways as a sum of consecutive naturals, for example, 104498 + ... + 109100.

It is an arithmetic number, because the mean of its divisors is an integer number (20441760).

Almost surely, 2^491595797 is an apocalyptic number.

It is an amenable number.

491595797 is a deficient number, since it is larger than the sum of its proper divisors (162540523).

491595797 is a wasteful number, since it uses less digits than its factorization.

491595797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4713.

The product of its digits is 3572100, while the sum is 56.

The square root of 491595797 is about 22171.9597013886. The cubic root of 491595797 is about 789.2284284274.

The spelling of 491595797 in words is "four hundred ninety-one million, five hundred ninety-five thousand, seven hundred ninety-seven".