489640171 has 8 divisors (see below), whose sum is σ = 518714064. Its totient is φ = 460596480.

The previous prime is 489640153. The next prime is 489640199. The reversal of 489640171 is 171046984.

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

It is a cyclic number.

It is not a de Polignac number, because 489640171 - 2⁷ = 489640043 is a prime.

It is not an unprimeable number, because it can be changed into a prime (489640111) 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 7 ways as a sum of consecutive naturals, for example, 31711 + ... + 44551.

It is an arithmetic number, because the mean of its divisors is an integer number (64839258).

Almost surely, 2^489640171 is an apocalyptic number.

489640171 is a deficient number, since it is larger than the sum of its proper divisors (29073893).

489640171 is a wasteful number, since it uses less digits than its factorization.

489640171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15101.

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 489640171 is about 22127.8144198653. The cubic root of 489640171 is about 788.1804896970.

The spelling of 489640171 in words is "four hundred eighty-nine million, six hundred forty thousand, one hundred seventy-one".