549450449 has 4 divisors (see below), whose sum is σ = 549497664. Its totient is φ = 549403236.

The previous prime is 549450439. The next prime is 549450467. The reversal of 549450449 is 944054945.

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 549450449 - 2²⁴ = 532673233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (549450439) 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 3 ways as a sum of consecutive naturals, for example, 7604 + ... + 34010.

It is an arithmetic number, because the mean of its divisors is an integer number (137374416).

Almost surely, 2^549450449 is an apocalyptic number.

It is an amenable number.

549450449 is a deficient number, since it is larger than the sum of its proper divisors (47215).

549450449 is a wasteful number, since it uses less digits than its factorization.

549450449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47214.

The product of its (nonzero) digits is 518400, while the sum is 44.

The square root of 549450449 is about 23440.3594042412. The cubic root of 549450449 is about 819.0482955275.

The spelling of 549450449 in words is "five hundred forty-nine million, four hundred fifty thousand, four hundred forty-nine".