1440201444 has 144 divisors (see below), whose sum is σ = 4101323520. Its totient is φ = 388938240.

The previous prime is 1440201437. The next prime is 1440201449. The reversal of 1440201444 is 4441020441.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1440201449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 723819 + ... + 725805.

Almost surely, 2^1440201444 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1440201444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2050661760).

1440201444 is an abundant number, since it is smaller than the sum of its proper divisors (2661122076).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1440201444 is a wasteful number, since it uses less digits than its factorization.

1440201444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2058 (or 2039 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 24.

The square root of 1440201444 is about 37949.9860869540. The cubic root of 1440201444 is about 1129.2958894414.

Adding to 1440201444 its reverse (4441020441), we get a palindrome (5881221885).

The spelling of 1440201444 in words is "one billion, four hundred forty million, two hundred one thousand, four hundred forty-four".