491120497 has 16 divisors (see below), whose sum is σ = 595769472. Its totient is φ = 395216640.

The previous prime is 491120491. The next prime is 491120527. The reversal of 491120497 is 794021194.

It is a de Polignac number, because none of the positive numbers 2^k-491120497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (491120491) 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 in 15 ways as a sum of consecutive naturals, for example, 45198 + ... + 55000.

It is an arithmetic number, because the mean of its divisors is an integer number (37235592).

Almost surely, 2^491120497 is an apocalyptic number.

It is an amenable number.

491120497 is a deficient number, since it is larger than the sum of its proper divisors (104648975).

491120497 is a wasteful number, since it uses less digits than its factorization.

491120497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10248.

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 491120497 is about 22161.2386161063. The cubic root of 491120497 is about 788.9739909169.

The spelling of 491120497 in words is "four hundred ninety-one million, one hundred twenty thousand, four hundred ninety-seven".