1440004005 has 48 divisors (see below), whose sum is σ = 2736923904. Its totient is φ = 694592640.

The previous prime is 1440003979. The next prime is 1440004051. The reversal of 1440004005 is 5004000441.

It is not a de Polignac number, because 1440004005 - 2¹⁰ = 1440002981 is a prime.

It is a super-2 number, since 2×1440004005² = 4147223068832080050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 90132 + ... + 104898.

It is an arithmetic number, because the mean of its divisors is an integer number (57019248).

Almost surely, 2^1440004005 is an apocalyptic number.

1440004005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1440004005 is a deficient number, since it is larger than the sum of its proper divisors (1296919899).

1440004005 is a wasteful number, since it uses less digits than its factorization.

1440004005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14986 (or 14983 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 1440004005 is about 37947.3846924923. The cubic root of 1440004005 is about 1129.2442815588.

Adding to 1440004005 its reverse (5004000441), we get a palindrome (6444004446).

The spelling of 1440004005 in words is "one billion, four hundred forty million, four thousand, five".