324409 has 4 divisors (see below), whose sum is σ = 325620. Its totient is φ = 323200.

The previous prime is 324403. The next prime is 324419. The reversal of 324409 is 904423.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 308025 + 16384 = 555^2 + 128^2 .

It is a cyclic number.

It is not a de Polignac number, because 324409 - 2¹⁷ = 193337 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

324409 is a lucky number.

It is a nialpdrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 324409.

It is not an unprimeable number, because it can be changed into a prime (324403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4 + ... + 805.

It is an arithmetic number, because the mean of its divisors is an integer number (81405).

2³²⁴⁴⁰⁹ is an apocalyptic number.

It is an amenable number.

324409 is a deficient number, since it is larger than the sum of its proper divisors (1211).

324409 is an equidigital number, since it uses as much as digits as its factorization.

324409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1210.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 324409 is about 569.5691353997. The cubic root of 324409 is about 68.7117429025.

The spelling of 324409 in words is "three hundred twenty-four thousand, four hundred nine".