489444251271 has 4 divisors (see below), whose sum is σ = 652592335032. Its totient is φ = 326296167512.

The previous prime is 489444251267. The next prime is 489444251281. The reversal of 489444251271 is 172152444984.

It is a happy number.

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 489444251271 - 2² = 489444251267 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (489444251281) 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, 81574041876 + ... + 81574041881.

It is an arithmetic number, because the mean of its divisors is an integer number (163148083758).

Almost surely, 2^489444251271 is an apocalyptic number.

489444251271 is a deficient number, since it is larger than the sum of its proper divisors (163148083761).

489444251271 is a wasteful number, since it uses less digits than its factorization.

489444251271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163148083760.

The product of its digits is 2580480, while the sum is 51.

The spelling of 489444251271 in words is "four hundred eighty-nine billion, four hundred forty-four million, two hundred fifty-one thousand, two hundred seventy-one".