549911289 has 16 divisors (see below), whose sum is σ = 737396352. Its totient is φ = 364524288.

The previous prime is 549911267. The next prime is 549911293. The reversal of 549911289 is 982119945.

It is not a de Polignac number, because 549911289 - 2⁷ = 549911161 is a prime.

It is not an unprimeable number, because it can be changed into a prime (549911239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 562369 + ... + 563345.

It is an arithmetic number, because the mean of its divisors is an integer number (46087272).

Almost surely, 2^549911289 is an apocalyptic number.

It is an amenable number.

549911289 is a deficient number, since it is larger than the sum of its proper divisors (187485063).

549911289 is a wasteful number, since it uses less digits than its factorization.

549911289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1856.

The product of its digits is 233280, while the sum is 48.

The square root of 549911289 is about 23450.1873979719. The cubic root of 549911289 is about 819.2772180447.

It can be divided in two parts, 54991 and 1289, that added together give a triangular number (56280 = T₃₃₅).

The spelling of 549911289 in words is "five hundred forty-nine million, nine hundred eleven thousand, two hundred eighty-nine".