489892561 has 8 divisors (see below), whose sum is σ = 522741920. Its totient is φ = 457749792.

The previous prime is 489892549. The next prime is 489892589. The reversal of 489892561 is 165298984.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-489892561 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 489892499 and 489892508.

It is not an unprimeable number, because it can be changed into a prime (489892591) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 175215 + ... + 177988.

It is an arithmetic number, because the mean of its divisors is an integer number (65342740).

Almost surely, 2^489892561 is an apocalyptic number.

It is an amenable number.

489892561 is a deficient number, since it is larger than the sum of its proper divisors (32849359).

489892561 is a wasteful number, since it uses less digits than its factorization.

489892561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353295.

The product of its digits is 1244160, while the sum is 52.

The square root of 489892561 is about 22133.5166884976. The cubic root of 489892561 is about 788.3158916482.

The spelling of 489892561 in words is "four hundred eighty-nine million, eight hundred ninety-two thousand, five hundred sixty-one".