44128609 has 8 divisors (see below), whose sum is σ = 50476608. Its totient is φ = 37791600.

The previous prime is 44128597. The next prime is 44128613. The reversal of 44128609 is 90682144.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 44128609 - 2⁵ = 44128577 is a prime.

It is not an unprimeable number, because it can be changed into a prime (44128649) 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 7 ways as a sum of consecutive naturals, for example, 9534 + ... + 13384.

It is an arithmetic number, because the mean of its divisors is an integer number (6309576).

Almost surely, 2^44128609 is an apocalyptic number.

It is an amenable number.

44128609 is a deficient number, since it is larger than the sum of its proper divisors (6347999).

44128609 is a wasteful number, since it uses less digits than its factorization.

44128609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5495.

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 44128609 is about 6642.9367752523. The cubic root of 44128609 is about 353.3784645291.

The spelling of 44128609 in words is "forty-four million, one hundred twenty-eight thousand, six hundred nine".