549999906 has 16 divisors (see below), whose sum is σ = 1137931200. Its totient is φ = 177011408.

The previous prime is 549999893. The next prime is 549999911. The reversal of 549999906 is 609999945.

It is a self number, because there is not a number n which added to its sum of digits gives 549999906.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1580286 + ... + 1580633.

It is an arithmetic number, because the mean of its divisors is an integer number (71120700).

Almost surely, 2^549999906 is an apocalyptic number.

549999906 is an abundant number, since it is smaller than the sum of its proper divisors (587931294).

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

549999906 is a wasteful number, since it uses less digits than its factorization.

549999906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3160953.

The product of its (nonzero) digits is 7085880, while the sum is 60.

The square root of 549999906 is about 23452.0767950303. The cubic root of 549999906 is about 819.3212239242.

The spelling of 549999906 in words is "five hundred forty-nine million, nine hundred ninety-nine thousand, nine hundred six".