548916989 has 4 divisors (see below), whose sum is σ = 548977056. Its totient is φ = 548856924.

The previous prime is 548916983. The next prime is 548917009. The reversal of 548916989 is 989619845.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 548916989 - 2²⁰ = 547868413 is a prime.

It is a super-2 number, since 2×548916989² = 602619721625652242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (548916983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13169 + ... + 35654.

It is an arithmetic number, because the mean of its divisors is an integer number (137244264).

Almost surely, 2^548916989 is an apocalyptic number.

It is an amenable number.

548916989 is a deficient number, since it is larger than the sum of its proper divisors (60067).

548916989 is a wasteful number, since it uses less digits than its factorization.

548916989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60066.

The product of its digits is 5598720, while the sum is 59.

The square root of 548916989 is about 23428.9775491804. The cubic root of 548916989 is about 818.7831390817.

The spelling of 548916989 in words is "five hundred forty-eight million, nine hundred sixteen thousand, nine hundred eighty-nine".