1440000747 has 48 divisors (see below), whose sum is σ = 2344043520. Its totient is φ = 880048800.

The previous prime is 1440000707. The next prime is 1440000791. The reversal of 1440000747 is 7470000441.

It is not a de Polignac number, because 1440000747 - 2¹² = 1439996651 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 1440000747.

It is not an unprimeable number, because it can be changed into a prime (1440000707) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 138097 + ... + 148157.

It is an arithmetic number, because the mean of its divisors is an integer number (48834240).

Almost surely, 2^1440000747 is an apocalyptic number.

1440000747 is a deficient number, since it is larger than the sum of its proper divisors (904042773).

1440000747 is a wasteful number, since it uses less digits than its factorization.

1440000747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10126 (or 10114 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 27.

The square root of 1440000747 is about 37947.3417646085. The cubic root of 1440000747 is about 1129.2434299222.

The spelling of 1440000747 in words is "one billion, four hundred forty million, seven hundred forty-seven", and thus it is an aban number.