869090693 has 2 divisors, whose sum is σ = 869090694. Its totient is φ = 869090692.

The previous prime is 869090659. The next prime is 869090707. The reversal of 869090693 is 396090968.

869090693 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 868657729 + 432964 = 29473^2 + 658^2 .

It is a cyclic number.

It is not a de Polignac number, because 869090693 - 2⁸ = 869090437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (869090633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 434545346 + 434545347.

It is an arithmetic number, because the mean of its divisors is an integer number (434545347).

Almost surely, 2^869090693 is an apocalyptic number.

It is an amenable number.

869090693 is a deficient number, since it is larger than the sum of its proper divisors (1).

869090693 is an equidigital number, since it uses as much as digits as its factorization.

869090693 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 629856, while the sum is 50.

The square root of 869090693 is about 29480.3441804874. The cubic root of 869090693 is about 954.3075645439.

The spelling of 869090693 in words is "eight hundred sixty-nine million, ninety thousand, six hundred ninety-three".