489982761 has 12 divisors (see below), whose sum is σ = 708009588. Its totient is φ = 326536704.

The previous prime is 489982751. The next prime is 489982763. The reversal of 489982761 is 167289984.

489982761 is a `hidden beast` number, since 489 + 98 + 2 + 76 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 471758400 + 18224361 = 21720^2 + 4269^2 .

It is not a de Polignac number, because 489982761 - 2¹⁸ = 489720617 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 489982698 and 489982707.

It is not an unprimeable number, because it can be changed into a prime (489982763) 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, 21601 + ... + 38033.

It is an arithmetic number, because the mean of its divisors is an integer number (59000799).

Almost surely, 2^489982761 is an apocalyptic number.

It is an amenable number.

489982761 is a deficient number, since it is larger than the sum of its proper divisors (218026827).

489982761 is a wasteful number, since it uses less digits than its factorization.

489982761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19752 (or 19749 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 54.

The square root of 489982761 is about 22135.5542284353. The cubic root of 489982761 is about 788.3642707796.

The spelling of 489982761 in words is "four hundred eighty-nine million, nine hundred eighty-two thousand, seven hundred sixty-one".