1539440886427 has 2 divisors, whose sum is σ = 1539440886428. Its totient is φ = 1539440886426.

The previous prime is 1539440886409. The next prime is 1539440886457. The reversal of 1539440886427 is 7246880449351.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1539440886427 is a prime.

It is not a weakly prime, because it can be changed into another prime (1539440886457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 769720443213 + 769720443214.

It is an arithmetic number, because the mean of its divisors is an integer number (769720443214).

It is a 1-persistent number, because it is pandigital, but 2⋅1539440886427 = 3078881772854 is not.

Almost surely, 2^{1539440886427} is an apocalyptic number.

1539440886427 is a deficient number, since it is larger than the sum of its proper divisors (1).

1539440886427 is an equidigital number, since it uses as much as digits as its factorization.

1539440886427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46448640, while the sum is 61.

The spelling of 1539440886427 in words is "one trillion, five hundred thirty-nine billion, four hundred forty million, eight hundred eighty-six thousand, four hundred twenty-seven".