549099 has 10 divisors (see below), whose sum is σ = 820380. Its totient is φ = 366012.

The previous prime is 549097. The next prime is 549121. The reversal of 549099 is 990945.

It is not a de Polignac number, because 549099 - 2¹ = 549097 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 549099.

It is not an unprimeable number, because it can be changed into a prime (549091) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 3309 + ... + 3470.

It is an arithmetic number, because the mean of its divisors is an integer number (82038).

2⁵⁴⁹⁰⁹⁹ is an apocalyptic number.

549099 is a deficient number, since it is larger than the sum of its proper divisors (271281).

549099 is an equidigital number, since it uses as much as digits as its factorization.

549099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6791 (or 6782 counting only the distinct ones).

The product of its (nonzero) digits is 14580, while the sum is 36.

The square root of 549099 is about 741.0121456494. The cubic root of 549099 is about 81.8873627001.

The spelling of 549099 in words is "five hundred forty-nine thousand, ninety-nine".