1439444 has 12 divisors (see below), whose sum is σ = 2606100. Its totient is φ = 694848.

The previous prime is 1439443. The next prime is 1439447. The reversal of 1439444 is 4449341.

It can be written as a sum of positive squares in 2 ways, for example, as 315844 + 1123600 = 562^2 + 1060^2 .

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1439443) 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 3 ways as a sum of consecutive naturals, for example, 6089 + ... + 6320.

It is an arithmetic number, because the mean of its divisors is an integer number (217175).

2^1439444 is an apocalyptic number.

It is an amenable number.

1439444 is a deficient number, since it is larger than the sum of its proper divisors (1166656).

1439444 is a wasteful number, since it uses less digits than its factorization.

1439444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12442 (or 12440 counting only the distinct ones).

The product of its digits is 6912, while the sum is 29.

The square root of 1439444 is about 1199.7683109667. The cubic root of 1439444 is about 112.9097878161.

It can be divided in two parts, 14394 and 44, that multiplied together give a palindrome (633336).

The spelling of 1439444 in words is "one million, four hundred thirty-nine thousand, four hundred forty-four".