549929 has 4 divisors (see below), whose sum is σ = 551760. Its totient is φ = 548100.

The previous prime is 549911. The next prime is 549937. The reversal of 549929 is 929945.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-549929 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 549892 and 549901.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 549929.

It is not an unprimeable number, because it can be changed into a prime (549949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 347 + ... + 1104.

It is an arithmetic number, because the mean of its divisors is an integer number (137940).

2⁵⁴⁹⁹²⁹ is an apocalyptic number.

It is an amenable number.

549929 is a deficient number, since it is larger than the sum of its proper divisors (1831).

549929 is a wasteful number, since it uses less digits than its factorization.

549929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1830.

The product of its digits is 29160, while the sum is 38.

The square root of 549929 is about 741.5719789744. The cubic root of 549929 is about 81.9286013441.

The spelling of 549929 in words is "five hundred forty-nine thousand, nine hundred twenty-nine".