489638 has 8 divisors (see below), whose sum is σ = 740232. Its totient is φ = 242896.

The previous prime is 489631. The next prime is 489653. The reversal of 489638 is 836984.

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

It is a nialpdrome in base 14.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 489638.

It is not an unprimeable number, because it can be changed into a prime (489631) by changing a digit.

489638 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 620 + ... + 1167.

It is an arithmetic number, because the mean of its divisors is an integer number (92529).

2⁴⁸⁹⁶³⁸ is an apocalyptic number.

489638 is a deficient number, since it is larger than the sum of its proper divisors (250594).

489638 is a wasteful number, since it uses less digits than its factorization.

489638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1926.

The product of its digits is 41472, while the sum is 38.

The square root of 489638 is about 699.7413807972. The cubic root of 489638 is about 78.8179324799.

The spelling of 489638 in words is "four hundred eighty-nine thousand, six hundred thirty-eight".