491864476 has 96 divisors (see below), whose sum is σ = 1012838400. Its totient is φ = 207567360.

The previous prime is 491864467. The next prime is 491864489. The reversal of 491864476 is 674468194.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 1571296 + ... + 1571608.

It is an arithmetic number, because the mean of its divisors is an integer number (10550400).

Almost surely, 2^491864476 is an apocalyptic number.

491864476 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

It is an amenable number.

491864476 is an abundant number, since it is smaller than the sum of its proper divisors (520973924).

491864476 is a wasteful number, since it uses less digits than its factorization.

491864476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419 (or 417 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 49.

The square root of 491864476 is about 22178.0178555253. The cubic root of 491864476 is about 789.3721850709.

The spelling of 491864476 in words is "four hundred ninety-one million, eight hundred sixty-four thousand, four hundred seventy-six".