1440040412 has 6 divisors (see below), whose sum is σ = 2520070728. Its totient is φ = 720020204.

The previous prime is 1440040411. The next prime is 1440040421. The reversal of 1440040412 is 2140400441.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1440040411) 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 as a sum of consecutive naturals, namely, 180005048 + ... + 180005055.

It is an arithmetic number, because the mean of its divisors is an integer number (420011788).

Almost surely, 2^1440040412 is an apocalyptic number.

It is an amenable number.

1440040412 is a deficient number, since it is larger than the sum of its proper divisors (1080030316).

1440040412 is a wasteful number, since it uses less digits than its factorization.

1440040412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360010107 (or 360010105 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 1440040412 is about 37947.8643931381. The cubic root of 1440040412 is about 1129.2537982106.

Adding to 1440040412 its reverse (2140400441), we get a palindrome (3580440853).

The spelling of 1440040412 in words is "one billion, four hundred forty million, forty thousand, four hundred twelve".