489747566 has 32 divisors (see below), whose sum is σ = 917256960. Its totient is φ = 190526400.

The previous prime is 489747551. The next prime is 489747571. The reversal of 489747566 is 665747984.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 122621 + ... + 126551.

It is an arithmetic number, because the mean of its divisors is an integer number (28664280).

Almost surely, 2^489747566 is an apocalyptic number.

489747566 is a deficient number, since it is larger than the sum of its proper divisors (427509394).

489747566 is a wasteful number, since it uses less digits than its factorization.

489747566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4760.

The product of its digits is 10160640, while the sum is 56.

The square root of 489747566 is about 22130.2409837760. The cubic root of 489747566 is about 788.2381105519.

The spelling of 489747566 in words is "four hundred eighty-nine million, seven hundred forty-seven thousand, five hundred sixty-six".