549711940 has 12 divisors (see below), whose sum is σ = 1154395116. Its totient is φ = 219884768.

The previous prime is 549711917. The next prime is 549711977. The reversal of 549711940 is 49117945.

It can be written as a sum of positive squares in 2 ways, for example, as 383611396 + 166100544 = 19586^2 + 12888^2 .

It is a junction number, because it is equal to n+sod(n) for n = 549711893 and 549711902.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 13742779 + ... + 13742818.

It is an arithmetic number, because the mean of its divisors is an integer number (96199593).

Almost surely, 2^549711940 is an apocalyptic number.

It is an amenable number.

549711940 is an abundant number, since it is smaller than the sum of its proper divisors (604683176).

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

549711940 is a wasteful number, since it uses less digits than its factorization.

549711940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27485606 (or 27485604 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 40.

The square root of 549711940 is about 23445.9365349307. The cubic root of 549711940 is about 819.1782070243.

The spelling of 549711940 in words is "five hundred forty-nine million, seven hundred eleven thousand, nine hundred forty".