491283856 has 40 divisors (see below), whose sum is σ = 1111000320. Its totient is φ = 206068224.

The previous prime is 491283839. The next prime is 491283883. The reversal of 491283856 is 658382194.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41401 + ... + 51928.

It is an arithmetic number, because the mean of its divisors is an integer number (27775008).

Almost surely, 2^491283856 is an apocalyptic number.

It is an amenable number.

491283856 is an abundant number, since it is smaller than the sum of its proper divisors (619716464).

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

491283856 is a wasteful number, since it uses less digits than its factorization.

491283856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93391 (or 93385 counting only the distinct ones).

The product of its digits is 414720, while the sum is 46.

The square root of 491283856 is about 22164.9240016744. The cubic root of 491283856 is about 789.0614587348.

The spelling of 491283856 in words is "four hundred ninety-one million, two hundred eighty-three thousand, eight hundred fifty-six".