489589749 has 48 divisors (see below), whose sum is σ = 825552000. Its totient is φ = 276295680.

The previous prime is 489589669. The next prime is 489589819. The reversal of 489589749 is 947985984.

489589749 is a `hidden beast` number, since 4 + 8 + 9 + 589 + 7 + 49 = 666.

It is not a de Polignac number, because 489589749 - 2⁷ = 489589621 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (489584749) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 161752 + ... + 164750.

It is an arithmetic number, because the mean of its divisors is an integer number (17199000).

Almost surely, 2^489589749 is an apocalyptic number.

It is an amenable number.

489589749 is a deficient number, since it is larger than the sum of its proper divisors (335962251).

489589749 is a wasteful number, since it uses less digits than its factorization.

489589749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3130 (or 3127 counting only the distinct ones).

The product of its digits is 26127360, while the sum is 63.

The square root of 489589749 is about 22126.6750552359. The cubic root of 489589749 is about 788.1534337736.

The spelling of 489589749 in words is "four hundred eighty-nine million, five hundred eighty-nine thousand, seven hundred forty-nine".