491799068 has 12 divisors (see below), whose sum is σ = 860814192. Its totient is φ = 245852160.

The previous prime is 491799067. The next prime is 491799073. The reversal of 491799068 is 860997194.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491799067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22721 + ... + 38727.

It is an arithmetic number, because the mean of its divisors is an integer number (71734516).

Almost surely, 2^491799068 is an apocalyptic number.

It is an amenable number.

491799068 is a deficient number, since it is larger than the sum of its proper divisors (369015124).

491799068 is a wasteful number, since it uses less digits than its factorization.

491799068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23692 (or 23690 counting only the distinct ones).

The product of its (nonzero) digits is 979776, while the sum is 53.

The square root of 491799068 is about 22176.5431932030. The cubic root of 491799068 is about 789.3371933559.

The spelling of 491799068 in words is "four hundred ninety-one million, seven hundred ninety-nine thousand, sixty-eight".