1440000791 has 2 divisors, whose sum is σ = 1440000792. Its totient is φ = 1440000790.

The previous prime is 1440000707. The next prime is 1440000797. The reversal of 1440000791 is 1970000441.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1440000791 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1440000791.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1440000797) 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, 720000395 + 720000396.

It is an arithmetic number, because the mean of its divisors is an integer number (720000396).

Almost surely, 2^1440000791 is an apocalyptic number.

1440000791 is a deficient number, since it is larger than the sum of its proper divisors (1).

1440000791 is an equidigital number, since it uses as much as digits as its factorization.

1440000791 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 1440000791 is about 37947.3423443592. The cubic root of 1440000791 is about 1129.2434414237.

The spelling of 1440000791 in words is "one billion, four hundred forty million, seven hundred ninety-one", and thus it is an aban number.