1440001103 has 4 divisors (see below), whose sum is σ = 1441094160. Its totient is φ = 1438908048.

The previous prime is 1440001097. The next prime is 1440001111. The reversal of 1440001103 is 3011000441.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1440001103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1440001153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 544550 + ... + 547187.

It is an arithmetic number, because the mean of its divisors is an integer number (360273540).

Almost surely, 2^1440001103 is an apocalyptic number.

1440001103 is a deficient number, since it is larger than the sum of its proper divisors (1093057).

1440001103 is a wasteful number, since it uses less digits than its factorization.

1440001103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1093056.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 1440001103 is about 37947.3464553188. The cubic root of 1440001103 is about 1129.2435229801.

Adding to 1440001103 its reverse (3011000441), we get a palindrome (4451001544).

The spelling of 1440001103 in words is "one billion, four hundred forty million, one thousand, one hundred three".