1384440252539 has 2 divisors, whose sum is σ = 1384440252540. Its totient is φ = 1384440252538.

The previous prime is 1384440252523. The next prime is 1384440252581. The reversal of 1384440252539 is 9352520444831.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1384440252539 - 2⁴ = 1384440252523 is a prime.

It is not a weakly prime, because it can be changed into another prime (1384440252599) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 692220126269 + 692220126270.

It is an arithmetic number, because the mean of its divisors is an integer number (692220126270).

Almost surely, 2^{1384440252539} is an apocalyptic number.

1384440252539 is a deficient number, since it is larger than the sum of its proper divisors (1).

1384440252539 is an equidigital number, since it uses as much as digits as its factorization.

1384440252539 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4147200, while the sum is 50.

The spelling of 1384440252539 in words is "one trillion, three hundred eighty-four billion, four hundred forty million, two hundred fifty-two thousand, five hundred thirty-nine".