489757384 has 8 divisors (see below), whose sum is σ = 918295110. Its totient is φ = 244878688.

The previous prime is 489757381. The next prime is 489757391. The reversal of 489757384 is 483757984.

It can be written as a sum of positive squares in only one way, i.e., 473932900 + 15824484 = 21770^2 + 3978^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (489757381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30609829 + ... + 30609844.

Almost surely, 2^489757384 is an apocalyptic number.

It is an amenable number.

489757384 is a deficient number, since it is larger than the sum of its proper divisors (428537726).

489757384 is a wasteful number, since it uses less digits than its factorization.

489757384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61219679 (or 61219675 counting only the distinct ones).

The product of its digits is 6773760, while the sum is 55.

The square root of 489757384 is about 22130.4628058249. The cubic root of 489757384 is about 788.2433778029.

The spelling of 489757384 in words is "four hundred eighty-nine million, seven hundred fifty-seven thousand, three hundred eighty-four".