491094881 has 8 divisors (see below), whose sum is σ = 517387200. Its totient is φ = 464847120.

The previous prime is 491094847. The next prime is 491094887. The reversal of 491094881 is 188490194.

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 491094881 - 2⁶ = 491094817 is a prime.

It is a super-2 number, since 2×491094881² = 482348364288808322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (491094887) 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, 12836 + ... + 33866.

It is an arithmetic number, because the mean of its divisors is an integer number (64673400).

Almost surely, 2^491094881 is an apocalyptic number.

It is an amenable number.

491094881 is a deficient number, since it is larger than the sum of its proper divisors (26292319).

491094881 is a wasteful number, since it uses less digits than its factorization.

491094881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22279.

The product of its (nonzero) digits is 82944, while the sum is 44.

The square root of 491094881 is about 22160.6606625344. The cubic root of 491094881 is about 788.9602735032.

The spelling of 491094881 in words is "four hundred ninety-one million, ninety-four thousand, eight hundred eighty-one".