489395638 has 8 divisors (see below), whose sum is σ = 735925320. Its totient is φ = 244087200.

The previous prime is 489395623. The next prime is 489395653. The reversal of 489395638 is 836593984.

It is an interprime number because it is at equal distance from previous prime (489395623) and next prime (489395653).

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

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 304308 + ... + 305911.

It is an arithmetic number, because the mean of its divisors is an integer number (91990665).

Almost surely, 2^489395638 is an apocalyptic number.

489395638 is a deficient number, since it is larger than the sum of its proper divisors (246529682).

489395638 is a wasteful number, since it uses less digits than its factorization.

489395638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 610622.

The product of its digits is 5598720, while the sum is 55.

The square root of 489395638 is about 22122.2882631974. The cubic root of 489395638 is about 788.0492584752.

The spelling of 489395638 in words is "four hundred eighty-nine million, three hundred ninety-five thousand, six hundred thirty-eight".