489566773 has 4 divisors (see below), whose sum is σ = 501507468. Its totient is φ = 477626080.

The previous prime is 489566761. The next prime is 489566801. The reversal of 489566773 is 377665984.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 59336209 + 430230564 = 7703^2 + 20742^2 .

It is a cyclic number.

It is not a de Polignac number, because 489566773 - 2²¹ = 487469621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (489566173) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5970286 + ... + 5970367.

It is an arithmetic number, because the mean of its divisors is an integer number (125376867).

Almost surely, 2^489566773 is an apocalyptic number.

It is an amenable number.

489566773 is a deficient number, since it is larger than the sum of its proper divisors (11940695).

489566773 is a wasteful number, since it uses less digits than its factorization.

489566773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11940694.

The product of its digits is 7620480, while the sum is 55.

The square root of 489566773 is about 22126.1558568134. The cubic root of 489566773 is about 788.1411044736.

The spelling of 489566773 in words is "four hundred eighty-nine million, five hundred sixty-six thousand, seven hundred seventy-three".