489538646 has 4 divisors (see below), whose sum is σ = 734307972. Its totient is φ = 244769322.

The previous prime is 489538633. The next prime is 489538661. The reversal of 489538646 is 646835984.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122384660 + ... + 122384663.

It is an arithmetic number, because the mean of its divisors is an integer number (183576993).

Almost surely, 2^489538646 is an apocalyptic number.

489538646 is a deficient number, since it is larger than the sum of its proper divisors (244769326).

489538646 is a wasteful number, since it uses less digits than its factorization.

489538646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244769325.

The product of its digits is 4976640, while the sum is 53.

The square root of 489538646 is about 22125.5202424711. The cubic root of 489538646 is about 788.1260105371.

The spelling of 489538646 in words is "four hundred eighty-nine million, five hundred thirty-eight thousand, six hundred forty-six".