489576691 has 4 divisors (see below), whose sum is σ = 489783672. Its totient is φ = 489369712.

The previous prime is 489576683. The next prime is 489576713. The reversal of 489576691 is 196675984.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 489576691 - 2³ = 489576683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (489576611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99901 + ... + 104686.

It is an arithmetic number, because the mean of its divisors is an integer number (122445918).

Almost surely, 2^489576691 is an apocalyptic number.

489576691 is a deficient number, since it is larger than the sum of its proper divisors (206981).

489576691 is a wasteful number, since it uses less digits than its factorization.

489576691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206980.

The product of its digits is 3265920, while the sum is 55.

The square root of 489576691 is about 22126.3799795629. The cubic root of 489576691 is about 788.1464266831.

The spelling of 489576691 in words is "four hundred eighty-nine million, five hundred seventy-six thousand, six hundred ninety-one".