549976 has 48 divisors (see below), whose sum is σ = 1272240. Its totient is φ = 221760.

The previous prime is 549949. The next prime is 549977. The reversal of 549976 is 679945.

It is an Ulam number.

It is a d-powerful number, because it can be written as 5⁵ + 4⁵ + 9⁴ + 9⁶ + 7² + 6⁵ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (549977) by changing a digit.

549976 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 11 ways as a sum of consecutive naturals, for example, 8986 + ... + 9046.

It is an arithmetic number, because the mean of its divisors is an integer number (26505).

2⁵⁴⁹⁹⁷⁶ is an apocalyptic number.

549976 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 549976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (636120).

549976 is an abundant number, since it is smaller than the sum of its proper divisors (722264).

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

549976 is a wasteful number, since it uses less digits than its factorization.

549976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104 (or 93 counting only the distinct ones).

The product of its digits is 68040, while the sum is 40.

The square root of 549976 is about 741.6036677363. The cubic root of 549976 is about 81.9309353027.

It can be divided in two parts, 549 and 976, that multiplied together give a square (535824 = 732²).

The spelling of 549976 in words is "five hundred forty-nine thousand, nine hundred seventy-six".