44168609 has 4 divisors (see below), whose sum is σ = 44249904. Its totient is φ = 44087316.

The previous prime is 44168591. The next prime is 44168617. The reversal of 44168609 is 90686144.

44168609 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 a cyclic number.

It is not a de Polignac number, because 44168609 - 2¹² = 44164513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (44168909) 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, 39827 + ... + 40920.

It is an arithmetic number, because the mean of its divisors is an integer number (11062476).

Almost surely, 2^44168609 is an apocalyptic number.

It is an amenable number.

44168609 is a deficient number, since it is larger than the sum of its proper divisors (81295).

44168609 is an equidigital number, since it uses as much as digits as its factorization.

44168609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81294.

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 44168609 is about 6645.9468098985. The cubic root of 44168609 is about 353.4852045794.

The spelling of 44168609 in words is "forty-four million, one hundred sixty-eight thousand, six hundred nine".