1440009368 has 16 divisors (see below), whose sum is σ = 3085734480. Its totient is φ = 617146848.

The previous prime is 1440009367. The next prime is 1440009377. The reversal of 1440009368 is 8639000441.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1440009367) 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, 12857171 + ... + 12857282.

It is an arithmetic number, because the mean of its divisors is an integer number (192858405).

Almost surely, 2^1440009368 is an apocalyptic number.

It is an amenable number.

1440009368 is an abundant number, since it is smaller than the sum of its proper divisors (1645725112).

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

1440009368 is a wasteful number, since it uses less digits than its factorization.

1440009368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25714466 (or 25714462 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 1440009368 is about 37947.4553560578. The cubic root of 1440009368 is about 1129.2456834368.

The spelling of 1440009368 in words is "one billion, four hundred forty million, nine thousand, three hundred sixty-eight".