549943447 has 4 divisors (see below), whose sum is σ = 549990640. Its totient is φ = 549896256.

The previous prime is 549943399. The next prime is 549943453. The reversal of 549943447 is 744349945.

549943447 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 744349945 = 5 ⋅148869989.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-549943447 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 549943447.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (549943747) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7879 + ... + 34087.

It is an arithmetic number, because the mean of its divisors is an integer number (137497660).

Almost surely, 2^549943447 is an apocalyptic number.

549943447 is a deficient number, since it is larger than the sum of its proper divisors (47193).

549943447 is a wasteful number, since it uses less digits than its factorization.

549943447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47192.

The product of its digits is 2177280, while the sum is 49.

The square root of 549943447 is about 23450.8730541104. The cubic root of 549943447 is about 819.2931877740.

The spelling of 549943447 in words is "five hundred forty-nine million, nine hundred forty-three thousand, four hundred forty-seven".