1289469339887 has 2 divisors, whose sum is σ = 1289469339888. Its totient is φ = 1289469339886.

The previous prime is 1289469339883. The next prime is 1289469339923. The reversal of 1289469339887 is 7889339649821.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1289469339887 - 2² = 1289469339883 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1289469339883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 644734669943 + 644734669944.

It is an arithmetic number, because the mean of its divisors is an integer number (644734669944).

Almost surely, 2^{1289469339887} is an apocalyptic number.

1289469339887 is a deficient number, since it is larger than the sum of its proper divisors (1).

1289469339887 is an equidigital number, since it uses as much as digits as its factorization.

1289469339887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1128701952, while the sum is 77.

The spelling of 1289469339887 in words is "one trillion, two hundred eighty-nine billion, four hundred sixty-nine million, three hundred thirty-nine thousand, eight hundred eighty-seven".