489456847521 has 12 divisors (see below), whose sum is σ = 707023446948. Its totient is φ = 326290616064.

The previous prime is 489456847519. The next prime is 489456847589. The reversal of 489456847521 is 125748654984.

It is a happy number.

489456847521 is a `hidden beast` number, since 4 + 8 + 9 + 4 + 5 + 68 + 47 + 521 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 247968145296 + 241488702225 = 497964^2 + 491415^2 .

It is not a de Polignac number, because 489456847521 - 2¹ = 489456847519 is a prime.

It is not an unprimeable number, because it can be changed into a prime (489456842521) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 937900 + ... + 1363293.

It is an arithmetic number, because the mean of its divisors is an integer number (58918620579).

Almost surely, 2^489456847521 is an apocalyptic number.

It is an amenable number.

489456847521 is a deficient number, since it is larger than the sum of its proper divisors (217566599427).

489456847521 is a wasteful number, since it uses less digits than its factorization.

489456847521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2324832 (or 2324829 counting only the distinct ones).

The product of its digits is 77414400, while the sum is 63.

The spelling of 489456847521 in words is "four hundred eighty-nine billion, four hundred fifty-six million, eight hundred forty-seven thousand, five hundred twenty-one".