489322989 has 12 divisors (see below), whose sum is σ = 708901596. Its totient is φ = 325245312.

The previous prime is 489322963. The next prime is 489323011. The reversal of 489322989 is 989223984.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 107433225 + 381889764 = 10365^2 + 19542^2 .

It is not a de Polignac number, because 489322989 - 2⁵ = 489322957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (489322949) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 77634 + ... + 83699.

It is an arithmetic number, because the mean of its divisors is an integer number (59075133).

Almost surely, 2^489322989 is an apocalyptic number.

It is an amenable number.

489322989 is a deficient number, since it is larger than the sum of its proper divisors (219578607).

489322989 is a wasteful number, since it uses less digits than its factorization.

489322989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161676 (or 161673 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 54.

The square root of 489322989 is about 22120.6462156963. The cubic root of 489322989 is about 788.0102621981.

The spelling of 489322989 in words is "four hundred eighty-nine million, three hundred twenty-two thousand, nine hundred eighty-nine".