1444385 has 4 divisors (see below), whose sum is σ = 1733268. Its totient is φ = 1155504.

The previous prime is 1444309. The next prime is 1444411. The reversal of 1444385 is 5834441.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1014049 + 430336 = 1007^2 + 656^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1444385 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144434 + ... + 144443.

It is an arithmetic number, because the mean of its divisors is an integer number (433317).

2^1444385 is an apocalyptic number.

It is an amenable number.

1444385 is a deficient number, since it is larger than the sum of its proper divisors (288883).

1444385 is an equidigital number, since it uses as much as digits as its factorization.

1444385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288882.

The product of its digits is 7680, while the sum is 29.

The square root of 1444385 is about 1201.8256945165. The cubic root of 1444385 is about 113.0388307304.

The spelling of 1444385 in words is "one million, four hundred forty-four thousand, three hundred eighty-five".