1331444 has 12 divisors (see below), whose sum is σ = 2452800. Its totient is φ = 630648.

The previous prime is 1331443. The next prime is 1331471. The reversal of 1331444 is 4441331.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8684 + ... + 8835.

It is an arithmetic number, because the mean of its divisors is an integer number (204400).

2^1331444 is an apocalyptic number.

It is an amenable number.

1331444 is a deficient number, since it is larger than the sum of its proper divisors (1121356).

1331444 is a wasteful number, since it uses less digits than its factorization.

1331444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17542 (or 17540 counting only the distinct ones).

The product of its digits is 576, while the sum is 20.

The square root of 1331444 is about 1153.8821430285. The cubic root of 1331444 is about 110.0122300451.

Adding to 1331444 its reverse (4441331), we get a palindrome (5772775).

The spelling of 1331444 in words is "one million, three hundred thirty-one thousand, four hundred forty-four".