4449 has 4 divisors (see below), whose sum is σ = 5936. Its totient is φ = 2964.

The previous prime is 4447. The next prime is 4451. The reversal of 4449 is 9444.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (4447) and next prime (4451).

It is not a de Polignac number, because 4449 - 2¹ = 4447 is a prime.

It is a d-powerful number, because it can be written as 4² + 4⁴ + 4⁶ + 9² .

It is a D-number.

It is a Duffinian number.

It is a plaindrome in base 10 and base 14.

It is not an unprimeable number, because it can be changed into a prime (4441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 739 + ... + 744.

It is an arithmetic number, because the mean of its divisors is an integer number (1484).

2⁴⁴⁴⁹ is an apocalyptic number.

It is an amenable number.

4449 is a deficient number, since it is larger than the sum of its proper divisors (1487).

4449 is a wasteful number, since it uses less digits than its factorization.

4449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1486.

The product of its digits is 576, while the sum is 21.

The square root of 4449 is about 66.7008245826. The cubic root of 4449 is about 16.4470293937.

The spelling of 4449 in words is "four thousand, four hundred forty-nine".