1244445 has 8 divisors (see below), whose sum is σ = 1991136. Its totient is φ = 663696.

The previous prime is 1244437. The next prime is 1244447. The reversal of 1244445 is 5444421.

It is a happy number.

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

It is not a de Polignac number, because 1244445 - 2³ = 1244437 is a prime.

It is a Curzon number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1244447) 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 in 7 ways as a sum of consecutive naturals, for example, 41467 + ... + 41496.

It is an arithmetic number, because the mean of its divisors is an integer number (248892).

2^1244445 is an apocalyptic number.

1244445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1244445 is a deficient number, since it is larger than the sum of its proper divisors (746691).

1244445 is an equidigital number, since it uses as much as digits as its factorization.

1244445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82971.

The product of its digits is 2560, while the sum is 24.

The square root of 1244445 is about 1115.5469510514. The cubic root of 1244445 is about 107.5619257412.

Subtracting from 1244445 its sum of digits (24), we obtain a palindrome (1244421).

Adding to 1244445 its reverse (5444421), we get a palindrome (6688866).

The spelling of 1244445 in words is "one million, two hundred forty-four thousand, four hundred forty-five".