489884681 has 16 divisors (see below), whose sum is σ = 588920640. Its totient is φ = 401526720.

The previous prime is 489884641. The next prime is 489884701. The reversal of 489884681 is 186488984.

It is a cyclic number.

It is not a de Polignac number, because 489884681 - 2²⁶ = 422775817 is a prime.

It is a super-2 number, since 2×489884681² = 479974001356943522, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (489884641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33686 + ... + 45983.

It is an arithmetic number, because the mean of its divisors is an integer number (36807540).

Almost surely, 2^489884681 is an apocalyptic number.

It is an amenable number.

489884681 is a deficient number, since it is larger than the sum of its proper divisors (99035959).

489884681 is a wasteful number, since it uses less digits than its factorization.

489884681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79736.

The product of its digits is 3538944, while the sum is 56.

The square root of 489884681 is about 22133.3386772082. The cubic root of 489884681 is about 788.3116648965.

The spelling of 489884681 in words is "four hundred eighty-nine million, eight hundred eighty-four thousand, six hundred eighty-one".