549430 has 32 divisors (see below), whose sum is σ = 1161216. Its totient is φ = 183264.

The previous prime is 549421. The next prime is 549431. The reversal of 549430 is 34945.

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 549395 and 549404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (549431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3207 + ... + 3373.

It is an arithmetic number, because the mean of its divisors is an integer number (36288).

2⁵⁴⁹⁴³⁰ is an apocalyptic number.

549430 is an abundant number, since it is smaller than the sum of its proper divisors (611786).

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

549430 is a wasteful number, since it uses less digits than its factorization.

549430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 549430 is about 741.2354551693. The cubic root of 549430 is about 81.9038134510.

It can be divided in two parts, 549 and 430, that added together give a palindrome (979).

The spelling of 549430 in words is "five hundred forty-nine thousand, four hundred thirty".