491794473 has 8 divisors (see below), whose sum is σ = 668098368. Its totient is φ = 321676784.

The previous prime is 491794453. The next prime is 491794477. The reversal of 491794473 is 374497194.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 491794473 - 2⁹ = 491793961 is a prime.

It is not an unprimeable number, because it can be changed into a prime (491794477) 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 7 ways as a sum of consecutive naturals, for example, 1546365 + ... + 1546682.

It is an arithmetic number, because the mean of its divisors is an integer number (83512296).

Almost surely, 2^491794473 is an apocalyptic number.

It is an amenable number.

491794473 is a deficient number, since it is larger than the sum of its proper divisors (176303895).

491794473 is a wasteful number, since it uses less digits than its factorization.

491794473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3093103.

The product of its digits is 762048, while the sum is 48.

The square root of 491794473 is about 22176.4395925045. The cubic root of 491794473 is about 789.3347350242.

The spelling of 491794473 in words is "four hundred ninety-one million, seven hundred ninety-four thousand, four hundred seventy-three".