489328129 has 4 divisors (see below), whose sum is σ = 490691520. Its totient is φ = 487964740.

The previous prime is 489328127. The next prime is 489328181. The reversal of 489328129 is 921823984.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 489328129 - 2¹ = 489328127 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (489328121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 681157 + ... + 681874.

It is an arithmetic number, because the mean of its divisors is an integer number (122672880).

Almost surely, 2^489328129 is an apocalyptic number.

It is an amenable number.

489328129 is a deficient number, since it is larger than the sum of its proper divisors (1363391).

489328129 is a wasteful number, since it uses less digits than its factorization.

489328129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1363390.

The product of its digits is 248832, while the sum is 46.

The square root of 489328129 is about 22120.7623964456. The cubic root of 489328129 is about 788.0130213563.

The spelling of 489328129 in words is "four hundred eighty-nine million, three hundred twenty-eight thousand, one hundred twenty-nine".