491922004 has 12 divisors (see below), whose sum is σ = 983844064. Its totient is φ = 210823704.

The previous prime is 491921987. The next prime is 491922031. The reversal of 491922004 is 400229194.

It is a happy number.

491922004 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8784294 + ... + 8784349.

Almost surely, 2^491922004 is an apocalyptic number.

It is an amenable number.

491922004 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

491922004 is a wasteful number, since it uses less digits than its factorization.

491922004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17568654 (or 17568652 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 491922004 is about 22179.3147775129. The cubic root of 491922004 is about 789.4029586105.

The spelling of 491922004 in words is "four hundred ninety-one million, nine hundred twenty-two thousand, four".