1440240044 has 12 divisors (see below), whose sum is σ = 2522712864. Its totient is φ = 719464944.

The previous prime is 1440240023. The next prime is 1440240047. The reversal of 1440240044 is 4400420441.

It is a super-2 number, since 2×1440240044² = 4148582768682243872, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1440240047) 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, 158807 + ... + 167630.

It is an arithmetic number, because the mean of its divisors is an integer number (210226072).

Almost surely, 2^1440240044 is an apocalyptic number.

It is an amenable number.

1440240044 is a deficient number, since it is larger than the sum of its proper divisors (1082472820).

1440240044 is a wasteful number, since it uses less digits than its factorization.

1440240044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327544 (or 327542 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 23.

The square root of 1440240044 is about 37950.4946476327. The cubic root of 1440240044 is about 1129.3059784078.

Adding to 1440240044 its reverse (4400420441), we get a palindrome (5840660485).

The spelling of 1440240044 in words is "one billion, four hundred forty million, two hundred forty thousand, forty-four".