869399041013 has 2 divisors, whose sum is σ = 869399041014. Its totient is φ = 869399041012.

The previous prime is 869399040989. The next prime is 869399041103. The reversal of 869399041013 is 310140993968.

It is a happy number.

Together with next prime (869399041103) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 523586829649 + 345812211364 = 723593^2 + 588058^2 .

It is a cyclic number.

It is not a de Polignac number, because 869399041013 - 2²⁴ = 869382263797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (869399041213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 434699520506 + 434699520507.

It is an arithmetic number, because the mean of its divisors is an integer number (434699520507).

Almost surely, 2^869399041013 is an apocalyptic number.

It is an amenable number.

869399041013 is a deficient number, since it is larger than the sum of its proper divisors (1).

869399041013 is an equidigital number, since it uses as much as digits as its factorization.

869399041013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1259712, while the sum is 53.

The spelling of 869399041013 in words is "eight hundred sixty-nine billion, three hundred ninety-nine million, forty-one thousand, thirteen".