8544409 has 4 divisors (see below), whose sum is σ = 8552500. Its totient is φ = 8536320.

The previous prime is 8544397. The next prime is 8544413. The reversal of 8544409 is 9044458.

8544409 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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, and also an emirpimes, since its reverse is a distinct semiprime: 9044458 = 2 ⋅4522229.

It can be written as a sum of positive squares in 2 ways, for example, as 5040025 + 3504384 = 2245^2 + 1872^2 .

It is a cyclic number.

It is not a de Polignac number, because 8544409 - 2¹⁹ = 8020121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8544449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2172 + ... + 4669.

It is an arithmetic number, because the mean of its divisors is an integer number (2138125).

Almost surely, 2^8544409 is an apocalyptic number.

It is an amenable number.

8544409 is a deficient number, since it is larger than the sum of its proper divisors (8091).

8544409 is a wasteful number, since it uses less digits than its factorization.

8544409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8090.

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 8544409 is about 2923.0821062707. The cubic root of 8544409 is about 204.4375540390.

The spelling of 8544409 in words is "eight million, five hundred forty-four thousand, four hundred nine".