489689249284 has 27 divisors (see below), whose sum is σ = 869037435903. Its totient is φ = 241440204672.

The previous prime is 489689249281. The next prime is 489689249377. The reversal of 489689249284 is 482942986984.

The square root of 489689249284 is 699778.

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

It can be written as a sum of positive squares in 4 ways, for example, as 102606183684 + 387083065600 = 320322^2 + 622160^2 .

It is a Harshad number since it is a multiple of its sum of digits (73).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (489689249281) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 102165192 + ... + 102169984.

Almost surely, 2^489689249284 is an apocalyptic number.

489689249284 is the 699778-th square number.

It is an amenable number.

489689249284 is a deficient number, since it is larger than the sum of its proper divisors (379348186619).

489689249284 is an frugal number, since it uses more digits than its factorization.

489689249284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9736 (or 4868 counting only the distinct ones).

The product of its digits is 573308928, while the sum is 73.

It can be divided in two parts, 4896892 and 49284, that added together give a square (4946176 = 2224²).

The spelling of 489689249284 in words is "four hundred eighty-nine billion, six hundred eighty-nine million, two hundred forty-nine thousand, two hundred eighty-four".