44381665 has 8 divisors (see below), whose sum is σ = 53297640. Its totient is φ = 35478912.

The previous prime is 44381653. The next prime is 44381669. The reversal of 44381665 is 56618344.

It is a happy number.

44381665 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 185761 + 44195904 = 431^2 + 6648^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 44381665 - 2¹¹ = 44379617 is a prime.

It is not an unprimeable number, because it can be changed into a prime (44381669) 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 7 ways as a sum of consecutive naturals, for example, 7021 + ... + 11749.

It is an arithmetic number, because the mean of its divisors is an integer number (6662205).

Almost surely, 2^44381665 is an apocalyptic number.

It is an amenable number.

44381665 is a deficient number, since it is larger than the sum of its proper divisors (8915975).

44381665 is a wasteful number, since it uses less digits than its factorization.

44381665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6611.

The product of its digits is 69120, while the sum is 37.

The square root of 44381665 is about 6661.9565444395. The cubic root of 44381665 is about 354.0526616837.

The spelling of 44381665 in words is "forty-four million, three hundred eighty-one thousand, six hundred sixty-five".