1440004812 has 24 divisors (see below), whose sum is σ = 3438152256. Its totient is φ = 468838608.

The previous prime is 1440004807. The next prime is 1440004817. The reversal of 1440004812 is 2184000441.

It is an interprime number because it is at equal distance from previous prime (1440004807) and next prime (1440004817).

It is a super-2 number, since 2×1440004812² = 4147227717166310688, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1440004817) 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 7 ways as a sum of consecutive naturals, for example, 1394838 + ... + 1395869.

It is an arithmetic number, because the mean of its divisors is an integer number (143256344).

Almost surely, 2^1440004812 is an apocalyptic number.

1440004812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1440004812 is an abundant number, since it is smaller than the sum of its proper divisors (1998147444).

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

1440004812 is a wasteful number, since it uses less digits than its factorization.

1440004812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2790757 (or 2790755 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 24.

The square root of 1440004812 is about 37947.3953256347. The cubic root of 1440004812 is about 1129.2444925073.

The spelling of 1440004812 in words is "one billion, four hundred forty million, four thousand, eight hundred twelve".