491344966 has 16 divisors (see below), whose sum is σ = 848941056. Its totient is φ = 208917576.

The previous prime is 491344937. The next prime is 491344967. The reversal of 491344966 is 669443194.

It is a super-2 number, since 2×491344966² = 482839751227082312, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491344967) 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 7 ways as a sum of consecutive naturals, for example, 136396 + ... + 139951.

It is an arithmetic number, because the mean of its divisors is an integer number (53058816).

Almost surely, 2^491344966 is an apocalyptic number.

491344966 is a deficient number, since it is larger than the sum of its proper divisors (357596090).

491344966 is a wasteful number, since it uses less digits than its factorization.

491344966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276483.

The product of its digits is 559872, while the sum is 46.

The square root of 491344966 is about 22166.3024882365. The cubic root of 491344966 is about 789.0941740690.

The spelling of 491344966 in words is "four hundred ninety-one million, three hundred forty-four thousand, nine hundred sixty-six".