1444609 has 4 divisors (see below), whose sum is σ = 1529604. Its totient is φ = 1359616.

The previous prime is 1444571. The next prime is 1444613. The reversal of 1444609 is 9064441.

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 640000 + 804609 = 800^2 + 897^2 .

It is a cyclic number.

It is not a de Polignac number, because 1444609 - 2⁷ = 1444481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1444649) by changing a digit.

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, 42472 + ... + 42505.

It is an arithmetic number, because the mean of its divisors is an integer number (382401).

2^1444609 is an apocalyptic number.

It is an amenable number.

1444609 is a deficient number, since it is larger than the sum of its proper divisors (84995).

1444609 is an equidigital number, since it uses as much as digits as its factorization.

1444609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84994.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 1444609 is about 1201.9188824542. The cubic root of 1444609 is about 113.0446739068.

It can be divided in two parts, 144 and 4609, that added together give a triangular number (4753 = T₉₇).

The spelling of 1444609 in words is "one million, four hundred forty-four thousand, six hundred nine".