549656406 has 24 divisors (see below), whose sum is σ = 1282532160. Its totient is φ = 169124976.

The previous prime is 549656389. The next prime is 549656407. The reversal of 549656406 is 604656945.

549656406 is a `hidden beast` number, since 549 + 65 + 6 + 40 + 6 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (549656407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1174246 + ... + 1174713.

It is an arithmetic number, because the mean of its divisors is an integer number (53438840).

Almost surely, 2^549656406 is an apocalyptic number.

549656406 is an abundant number, since it is smaller than the sum of its proper divisors (732875754).

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

549656406 is a wasteful number, since it uses less digits than its factorization.

549656406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2348980 (or 2348977 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 45.

The square root of 549656406 is about 23444.7522059842. The cubic root of 549656406 is about 819.1506205915.

The spelling of 549656406 in words is "five hundred forty-nine million, six hundred fifty-six thousand, four hundred six".