489747631 has 8 divisors (see below), whose sum is σ = 492460544. Its totient is φ = 487042200.

The previous prime is 489747619. The next prime is 489747637. The reversal of 489747631 is 136747984.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 489747631 - 2¹⁷ = 489616559 is a prime.

It is a super-2 number, since 2×489747631² = 479705484140224322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (489747637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 170356 + ... + 173206.

It is an arithmetic number, because the mean of its divisors is an integer number (61557568).

Almost surely, 2^489747631 is an apocalyptic number.

489747631 is a deficient number, since it is larger than the sum of its proper divisors (2712913).

489747631 is a wasteful number, since it uses less digits than its factorization.

489747631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3741.

The product of its digits is 1016064, while the sum is 49.

The square root of 489747631 is about 22130.2424523547. The cubic root of 489747631 is about 788.2381454240.

The spelling of 489747631 in words is "four hundred eighty-nine million, seven hundred forty-seven thousand, six hundred thirty-one".