489668091 has 16 divisors (see below), whose sum is σ = 743212800. Its totient is φ = 283865120.

The previous prime is 489668041. The next prime is 489668107. The reversal of 489668091 is 190866984.

It is a happy number.

It is not a de Polignac number, because 489668091 - 2⁹ = 489667579 is a prime.

It is not an unprimeable number, because it can be changed into a prime (489668041) 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, 321816 + ... + 323333.

It is an arithmetic number, because the mean of its divisors is an integer number (46450800).

Almost surely, 2^489668091 is an apocalyptic number.

489668091 is a deficient number, since it is larger than the sum of its proper divisors (253544709).

489668091 is a wasteful number, since it uses less digits than its factorization.

489668091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 645186.

The product of its (nonzero) digits is 746496, while the sum is 51.

The square root of 489668091 is about 22128.4452910728. The cubic root of 489668091 is about 788.1954704810.

The spelling of 489668091 in words is "four hundred eighty-nine million, six hundred sixty-eight thousand, ninety-one".