4409 has 2 divisors, whose sum is σ = 4410. Its totient is φ = 4408.

The previous prime is 4397. The next prime is 4421. The reversal of 4409 is 9044.

It is a balanced prime because it is at equal distance from previous prime (4397) and next prime (4421).

It can be written as a sum of positive squares in only one way, i.e., 2809 + 1600 = 53^2 + 40^2 .

It is a cyclic number.

It is not a de Polignac number, because 4409 - 2⁸ = 4153 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is an Ulam number.

It is a Curzon number.

It is a plaindrome in base 7, base 11, base 15 and base 16.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 4409.

It is not a weakly prime, because it can be changed into another prime (4909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2204 + 2205.

It is an arithmetic number, because the mean of its divisors is an integer number (2205).

2⁴⁴⁰⁹ is an apocalyptic number.

It is an amenable number.

4409 is a deficient number, since it is larger than the sum of its proper divisors (1).

4409 is an equidigital number, since it uses as much as digits as its factorization.

4409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 4409 is about 66.4003012041. The cubic root of 4409 is about 16.3975903658.

The spelling of 4409 in words is "four thousand, four hundred nine".