489821644 has 12 divisors (see below), whose sum is σ = 923125504. Its totient is φ = 226071504.

The previous prime is 489821627. The next prime is 489821659. The reversal of 489821644 is 446128984.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 489821594 and 489821603.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4709772 + ... + 4709875.

Almost surely, 2^489821644 is an apocalyptic number.

It is an amenable number.

489821644 is a deficient number, since it is larger than the sum of its proper divisors (433303860).

489821644 is a wasteful number, since it uses less digits than its factorization.

489821644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9419664 (or 9419662 counting only the distinct ones).

The product of its digits is 442368, while the sum is 46.

The square root of 489821644 is about 22131.9146031246. The cubic root of 489821644 is about 788.2778508610.

The spelling of 489821644 in words is "four hundred eighty-nine million, eight hundred twenty-one thousand, six hundred forty-four".