4440389 has 2 divisors, whose sum is σ = 4440390. Its totient is φ = 4440388.

The previous prime is 4440379. The next prime is 4440413. The reversal of 4440389 is 9830444.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4068289 + 372100 = 2017^2 + 610^2 .

It is a cyclic number.

It is not a de Polignac number, because 4440389 - 2⁸ = 4440133 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4440379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2220194 + 2220195.

It is an arithmetic number, because the mean of its divisors is an integer number (2220195).

Almost surely, 2^4440389 is an apocalyptic number.

It is an amenable number.

4440389 is a deficient number, since it is larger than the sum of its proper divisors (1).

4440389 is an equidigital number, since it uses as much as digits as its factorization.

4440389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 4440389 is about 2107.2230541639. The cubic root of 4440389 is about 164.3641151404.

The spelling of 4440389 in words is "four million, four hundred forty thousand, three hundred eighty-nine".