14409 has 6 divisors (see below), whose sum is σ = 20826. Its totient is φ = 9600.

The previous prime is 14407. The next prime is 14411. The reversal of 14409 is 90441.

It is an interprime number because it is at equal distance from previous prime (14407) and next prime (14411).

It can be written as a sum of positive squares in only one way, i.e., 14400 + 9 = 120^2 + 3^2 .

It is not a de Polignac number, because 14409 - 2¹ = 14407 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 14391 and 14400.

It is not an unprimeable number, because it can be changed into a prime (14401) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 792 + ... + 809.

It is an arithmetic number, because the mean of its divisors is an integer number (3471).

2¹⁴⁴⁰⁹ is an apocalyptic number.

It is an amenable number.

14409 is a deficient number, since it is larger than the sum of its proper divisors (6417).

14409 is a wasteful number, since it uses less digits than its factorization.

14409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1607 (or 1604 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 14409 is about 120.0374941425. The cubic root of 14409 is about 24.3338754284. Note that the first 3 decimals are identical.

The spelling of 14409 in words is "fourteen thousand, four hundred nine".