549396 has 24 divisors (see below), whose sum is σ = 1424640. Its totient is φ = 183096.

The previous prime is 549391. The next prime is 549403. The reversal of 549396 is 693945.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a zygodrome in base 7.

It is a self number, because there is not a number n which added to its sum of digits gives 549396.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 549396.

It is not an unprimeable number, because it can be changed into a prime (549391) by changing a digit.

549396 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2436 + ... + 2651.

It is an arithmetic number, because the mean of its divisors is an integer number (59360).

2⁵⁴⁹³⁹⁶ is an apocalyptic number.

It is an amenable number.

549396 is an abundant number, since it is smaller than the sum of its proper divisors (875244).

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

549396 is a wasteful number, since it uses less digits than its factorization.

549396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5100 (or 5092 counting only the distinct ones).

The product of its digits is 29160, while the sum is 36.

The square root of 549396 is about 741.2125201317. The cubic root of 549396 is about 81.9021239503.

It can be divided in two parts, 54939 and 6, that added together give a palindrome (54945).

The spelling of 549396 in words is "five hundred forty-nine thousand, three hundred ninety-six".