489731331 has 8 divisors (see below), whose sum is σ = 653096704. Its totient is φ = 326426760.

The previous prime is 489731243. The next prime is 489731339. The reversal of 489731331 is 133137984.

It is a happy number.

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

It is not a de Polignac number, because 489731331 - 2⁹ = 489730819 is a prime.

It is a super-2 number, since 2×489731331² = 479673553126063122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 489731331.

It is not an unprimeable number, because it can be changed into a prime (489731339) 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 in 7 ways as a sum of consecutive naturals, for example, 9186 + ... + 32616.

It is an arithmetic number, because the mean of its divisors is an integer number (81637088).

Almost surely, 2^489731331 is an apocalyptic number.

489731331 is a deficient number, since it is larger than the sum of its proper divisors (163365373).

489731331 is a wasteful number, since it uses less digits than its factorization.

489731331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30401.

The product of its digits is 54432, while the sum is 39.

The square root of 489731331 is about 22129.8741749699. The cubic root of 489731331 is about 788.2294004953.

It can be divided in two parts, 48 and 9731331, that added together give a palindrome (9731379).

The spelling of 489731331 in words is "four hundred eighty-nine million, seven hundred thirty-one thousand, three hundred thirty-one".