4444009 has 4 divisors (see below), whose sum is σ = 4463316. Its totient is φ = 4424704.

The previous prime is 4444001. The next prime is 4444049. The reversal of 4444009 is 9004444.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 363609 + 4080400 = 603^2 + 2020^2 .

It is a cyclic number.

It is not a de Polignac number, because 4444009 - 2³ = 4444001 is a prime.

It is a Duffinian number.

4444009 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (4444001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9304 + ... + 9769.

It is an arithmetic number, because the mean of its divisors is an integer number (1115829).

Almost surely, 2^4444009 is an apocalyptic number.

It is an amenable number.

4444009 is a deficient number, since it is larger than the sum of its proper divisors (19307).

4444009 is a wasteful number, since it uses less digits than its factorization.

4444009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19306.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 4444009 is about 2108.0818295313. The cubic root of 4444009 is about 164.4087686216.

The spelling of 4444009 in words is "four million, four hundred forty-four thousand, nine".