489217749 has 16 divisors (see below), whose sum is σ = 662114112. Its totient is φ = 321245568.

The previous prime is 489217739. The next prime is 489217753. The reversal of 489217749 is 947712984.

It is not a de Polignac number, because 489217749 - 2⁹ = 489217237 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (489217739) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 299874 + ... + 301500.

It is an arithmetic number, because the mean of its divisors is an integer number (41382132).

Almost surely, 2^489217749 is an apocalyptic number.

It is an amenable number.

489217749 is a deficient number, since it is larger than the sum of its proper divisors (172896363).

489217749 is a wasteful number, since it uses less digits than its factorization.

489217749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3076.

The product of its digits is 1016064, while the sum is 51.

The square root of 489217749 is about 22118.2673145977. The cubic root of 489217749 is about 787.9537649915.

The spelling of 489217749 in words is "four hundred eighty-nine million, two hundred seventeen thousand, seven hundred forty-nine".