491834993 has 16 divisors (see below), whose sum is σ = 534643200. Its totient is φ = 449762880.

The previous prime is 491834977. The next prime is 491835011. The reversal of 491834993 is 399438194.

It is a cyclic number.

It is not a de Polignac number, because 491834993 - 2⁴ = 491834977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (491834393) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 966023 + ... + 966531.

It is an arithmetic number, because the mean of its divisors is an integer number (33415200).

Almost surely, 2^491834993 is an apocalyptic number.

It is an amenable number.

491834993 is a deficient number, since it is larger than the sum of its proper divisors (42808207).

491834993 is a wasteful number, since it uses less digits than its factorization.

491834993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1072.

The product of its digits is 839808, while the sum is 50.

The square root of 491834993 is about 22177.3531558660. The cubic root of 491834993 is about 789.3564127553.

The spelling of 491834993 in words is "four hundred ninety-one million, eight hundred thirty-four thousand, nine hundred ninety-three".