489562857 has 48 divisors (see below), whose sum is σ = 834043392. Its totient is φ = 270921600.

The previous prime is 489562847. The next prime is 489562861. The reversal of 489562857 is 758265984.

489562857 is a `hidden beast` number, since 4 + 8 + 9 + 5 + 628 + 5 + 7 = 666.

It is not a de Polignac number, because 489562857 - 2⁷ = 489562729 is a prime.

It is not an unprimeable number, because it can be changed into a prime (489562807) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 298243 + ... + 299879.

It is an arithmetic number, because the mean of its divisors is an integer number (17375904).

Almost surely, 2^489562857 is an apocalyptic number.

489562857 is a gapful number since it is divisible by the number (47) formed by its first and last digit.

It is an amenable number.

489562857 is a deficient number, since it is larger than the sum of its proper divisors (344480535).

489562857 is a wasteful number, since it uses less digits than its factorization.

489562857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1798 (or 1795 counting only the distinct ones).

The product of its digits is 4838400, while the sum is 54.

The square root of 489562857 is about 22126.0673640844. The cubic root of 489562857 is about 788.1390030451.

The spelling of 489562857 in words is "four hundred eighty-nine million, five hundred sixty-two thousand, eight hundred fifty-seven".