548991044 has 24 divisors (see below), whose sum is σ = 1098478080. Its totient is φ = 235175616.

The previous prime is 548991043. The next prime is 548991077. The reversal of 548991044 is 440199845.

It is a junction number, because it is equal to n+sod(n) for n = 548990986 and 548991004.

It is not an unprimeable number, because it can be changed into a prime (548991043) 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 7 ways as a sum of consecutive naturals, for example, 121229 + ... + 125675.

It is an arithmetic number, because the mean of its divisors is an integer number (45769920).

Almost surely, 2^548991044 is an apocalyptic number.

It is an amenable number.

548991044 is an abundant number, since it is smaller than the sum of its proper divisors (549487036).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

548991044 is a wasteful number, since it uses less digits than its factorization.

548991044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8867 (or 8865 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 44.

The square root of 548991044 is about 23430.5579105577. The cubic root of 548991044 is about 818.8199584066.

The spelling of 548991044 in words is "five hundred forty-eight million, nine hundred ninety-one thousand, forty-four".