489445756816 has 15 divisors (see below), whose sum is σ = 948306575793. Its totient is φ = 244721479200.

The previous prime is 489445756801. The next prime is 489445756843. The reversal of 489445756816 is 618657544984.

The square root of 489445756816 is 699604.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 267491702416 + 221954054400 = 517196^2 + 471120^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 2710966 + ... + 2885866.

Almost surely, 2^489445756816 is an apocalyptic number.

489445756816 is the 699604-th square number.

It is an amenable number.

489445756816 is a deficient number, since it is larger than the sum of its proper divisors (458860818977).

489445756816 is an frugal number, since it uses more digits than its factorization.

489445756816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349810 (or 174903 counting only the distinct ones).

The product of its digits is 232243200, while the sum is 67.

The spelling of 489445756816 in words is "four hundred eighty-nine billion, four hundred forty-five million, seven hundred fifty-six thousand, eight hundred sixteen".