489057771 has 4 divisors (see below), whose sum is σ = 652077032. Its totient is φ = 326038512.

The previous prime is 489057757. The next prime is 489057781. The reversal of 489057771 is 177750984.

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

It is not a de Polignac number, because 489057771 - 2⁹ = 489057259 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 489057771.

It is not an unprimeable number, because it can be changed into a prime (489057721) 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, 81509626 + ... + 81509631.

It is an arithmetic number, because the mean of its divisors is an integer number (163019258).

Almost surely, 2^489057771 is an apocalyptic number.

489057771 is a deficient number, since it is larger than the sum of its proper divisors (163019261).

489057771 is a wasteful number, since it uses less digits than its factorization.

489057771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163019260.

The product of its (nonzero) digits is 493920, while the sum is 48.

The square root of 489057771 is about 22114.6505963807. The cubic root of 489057771 is about 787.8678666292.

The spelling of 489057771 in words is "four hundred eighty-nine million, fifty-seven thousand, seven hundred seventy-one".