548440489 has 12 divisors (see below), whose sum is σ = 569721100. Its totient is φ = 527929920.

The previous prime is 548440471. The next prime is 548440507. The reversal of 548440489 is 984044845.

It is an interprime number because it is at equal distance from previous prime (548440471) and next prime (548440507).

It can be written as a sum of positive squares in 6 ways, for example, as 89624089 + 458816400 = 9467^2 + 21420^2 .

It is not a de Polignac number, because 548440489 - 2⁹ = 548439977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (548440429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 353287 + ... + 354835.

Almost surely, 2^548440489 is an apocalyptic number.

It is an amenable number.

548440489 is a deficient number, since it is larger than the sum of its proper divisors (21280611).

548440489 is a wasteful number, since it uses less digits than its factorization.

548440489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2028 (or 1999 counting only the distinct ones).

The product of its (nonzero) digits is 737280, while the sum is 46.

The square root of 548440489 is about 23418.8063103139. The cubic root of 548440489 is about 818.5461493237.

The spelling of 548440489 in words is "five hundred forty-eight million, four hundred forty thousand, four hundred eighty-nine".