1289469339905 has 16 divisors (see below), whose sum is σ = 1585239030144. Its totient is φ = 1006329217920.

The previous prime is 1289469339887. The next prime is 1289469339923. The reversal of 1289469339905 is 5099339649821.

It is an interprime number because it is at equal distance from previous prime (1289469339887) and next prime (1289469339923).

It is not a de Polignac number, because 1289469339905 - 2¹⁴ = 1289469323521 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 2194964 + ... + 2719706.

It is an arithmetic number, because the mean of its divisors is an integer number (99077439384).

Almost surely, 2^{1289469339905} is an apocalyptic number.

It is an amenable number.

1289469339905 is a deficient number, since it is larger than the sum of its proper divisors (295769690239).

1289469339905 is a wasteful number, since it uses less digits than its factorization.

1289469339905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536776.

The product of its (nonzero) digits is 113374080, while the sum is 68.

The spelling of 1289469339905 in words is "one trillion, two hundred eighty-nine billion, four hundred sixty-nine million, three hundred thirty-nine thousand, nine hundred five".