489522861 has 12 divisors (see below), whose sum is σ = 714090780. Its totient is φ = 323116800.

The previous prime is 489522857. The next prime is 489522863. The reversal of 489522861 is 168225984.

489522861 is a `hidden beast` number, since 48 + 9 + 522 + 86 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 462680100 + 26842761 = 21510^2 + 5181^2 .

It is not a de Polignac number, because 489522861 - 2² = 489522857 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (489522863) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 268356 + ... + 270173.

It is an arithmetic number, because the mean of its divisors is an integer number (59507565).

Almost surely, 2^489522861 is an apocalyptic number.

It is an amenable number.

489522861 is a deficient number, since it is larger than the sum of its proper divisors (224567919).

489522861 is a wasteful number, since it uses less digits than its factorization.

489522861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 538636 (or 538633 counting only the distinct ones).

The product of its digits is 276480, while the sum is 45.

The square root of 489522861 is about 22125.1635248194. The cubic root of 489522861 is about 788.1175394982.

The spelling of 489522861 in words is "four hundred eighty-nine million, five hundred twenty-two thousand, eight hundred sixty-one".