44389561 has 2 divisors, whose sum is σ = 44389562. Its totient is φ = 44389560.

The previous prime is 44389531. The next prime is 44389607. The reversal of 44389561 is 16598344.

44389561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31573161 + 12816400 = 5619^2 + 3580^2 .

It is a cyclic number.

It is not a de Polignac number, because 44389561 - 2¹⁹ = 43865273 is a prime.

It is not a weakly prime, because it can be changed into another prime (44389531) 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 as a sum of consecutive naturals, namely, 22194780 + 22194781.

It is an arithmetic number, because the mean of its divisors is an integer number (22194781).

Almost surely, 2^44389561 is an apocalyptic number.

It is an amenable number.

44389561 is a deficient number, since it is larger than the sum of its proper divisors (1).

44389561 is an equidigital number, since it uses as much as digits as its factorization.

44389561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 103680, while the sum is 40.

The square root of 44389561 is about 6662.5491367794. The cubic root of 44389561 is about 354.0736570958.

The spelling of 44389561 in words is "forty-four million, three hundred eighty-nine thousand, five hundred sixty-one".