44912009 has 4 divisors (see below), whose sum is σ = 45527316. Its totient is φ = 44296704.

The previous prime is 44911967. The next prime is 44912069. The reversal of 44912009 is 90021944.

44912009 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.

It can be written as a sum of positive squares in 2 ways, for example, as 28590409 + 16321600 = 5347^2 + 4040^2 .

It is a cyclic number.

It is not a de Polignac number, because 44912009 - 2⁸ = 44911753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (44912069) 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, 307544 + ... + 307689.

It is an arithmetic number, because the mean of its divisors is an integer number (11381829).

Almost surely, 2^44912009 is an apocalyptic number.

It is an amenable number.

44912009 is a deficient number, since it is larger than the sum of its proper divisors (615307).

44912009 is an equidigital number, since it uses as much as digits as its factorization.

44912009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 615306.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 44912009 is about 6701.6422614162. The cubic root of 44912009 is about 355.4573461432.

The spelling of 44912009 in words is "forty-four million, nine hundred twelve thousand, nine".