44188145 has 8 divisors (see below), whose sum is σ = 53061480. Its totient is φ = 35326720.

The previous prime is 44188127. The next prime is 44188147. The reversal of 44188145 is 54188144.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 14070001 + 30118144 = 3751^2 + 5488^2 .

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

It is not a de Polignac number, because 44188145 - 2⁸ = 44187889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (44188147) 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, 12761 + ... + 15849.

It is an arithmetic number, because the mean of its divisors is an integer number (6632685).

Almost surely, 2^44188145 is an apocalyptic number.

It is an amenable number.

44188145 is a deficient number, since it is larger than the sum of its proper divisors (8873335).

44188145 is a wasteful number, since it uses less digits than its factorization.

44188145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5955.

The product of its digits is 20480, while the sum is 35.

The square root of 44188145 is about 6647.4164154204. The cubic root of 44188145 is about 353.5373129977.

Subtracting 44188145 from its reverse (54188144), we obtain a palindrome (9999999).

The spelling of 44188145 in words is "forty-four million, one hundred eighty-eight thousand, one hundred forty-five".