4445009 has 4 divisors (see below), whose sum is σ = 4517940. Its totient is φ = 4372080.

The previous prime is 4444991. The next prime is 4445017. The reversal of 4445009 is 9005444.

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 1555009 + 2890000 = 1247^2 + 1700^2 .

It is a cyclic number.

It is not a de Polignac number, because 4445009 - 2⁸ = 4444753 is a prime.

It is a Duffinian number.

It is a plaindrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (4445029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36374 + ... + 36495.

It is an arithmetic number, because the mean of its divisors is an integer number (1129485).

Almost surely, 2^4445009 is an apocalyptic number.

It is an amenable number.

4445009 is a deficient number, since it is larger than the sum of its proper divisors (72931).

4445009 is an equidigital number, since it uses as much as digits as its factorization.

4445009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72930.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 4445009 is about 2108.3189986337. The cubic root of 4445009 is about 164.4210995626.

The spelling of 4445009 in words is "four million, four hundred forty-five thousand, nine".