1440041144 has 8 divisors (see below), whose sum is σ = 2700077160. Its totient is φ = 720020568.

The previous prime is 1440041137. The next prime is 1440041149. The reversal of 1440041144 is 4411400441.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1440041149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90002564 + ... + 90002579.

It is an arithmetic number, because the mean of its divisors is an integer number (337509645).

Almost surely, 2^1440041144 is an apocalyptic number.

It is an amenable number.

1440041144 is a deficient number, since it is larger than the sum of its proper divisors (1260036016).

1440041144 is a wasteful number, since it uses less digits than its factorization.

1440041144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180005149 (or 180005145 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 23.

The square root of 1440041144 is about 37947.8740379484. The cubic root of 1440041144 is about 1129.2539895510.

Adding to 1440041144 its reverse (4411400441), we get a palindrome (5851441585).

The spelling of 1440041144 in words is "one billion, four hundred forty million, forty-one thousand, one hundred forty-four".