1440005412 has 24 divisors (see below), whose sum is σ = 3360865312. Its totient is φ = 479880000.

The previous prime is 1440005393. The next prime is 1440005419. The reversal of 1440005412 is 2145000441.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1440005419) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42912 + ... + 68712.

Almost surely, 2^1440005412 is an apocalyptic number.

1440005412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1440005412 is an abundant number, since it is smaller than the sum of its proper divisors (1920859900).

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

1440005412 is a wasteful number, since it uses less digits than its factorization.

1440005412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30459 (or 30457 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 1440005412 is about 37947.4032313148. The cubic root of 1440005412 is about 1129.2446493463.

Adding to 1440005412 its reverse (2145000441), we get a palindrome (3585005853).

The spelling of 1440005412 in words is "one billion, four hundred forty million, five thousand, four hundred twelve".