491798946 has 16 divisors (see below), whose sum is σ = 983865600. Its totient is φ = 163888368.

The previous prime is 491798927. The next prime is 491798963. The reversal of 491798946 is 649897194.

It is an unprimeable number.

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, 19000 + ... + 36668.

It is an arithmetic number, because the mean of its divisors is an integer number (61491600).

Almost surely, 2^491798946 is an apocalyptic number.

491798946 is an abundant number, since it is smaller than the sum of its proper divisors (492066654).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

491798946 is a wasteful number, since it uses less digits than its factorization.

491798946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22313.

The product of its digits is 3919104, while the sum is 57.

The square root of 491798946 is about 22176.5404425487. The cubic root of 491798946 is about 789.3371280859.

The spelling of 491798946 in words is "four hundred ninety-one million, seven hundred ninety-eight thousand, nine hundred forty-six".