869266369 has 2 divisors, whose sum is σ = 869266370. Its totient is φ = 869266368.

The previous prime is 869266339. The next prime is 869266501. The reversal of 869266369 is 963662968.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 745945344 + 123321025 = 27312^2 + 11105^2 .

It is a cyclic number.

It is not a de Polignac number, because 869266369 - 2¹¹ = 869264321 is a prime.

It is a super-2 number, since 2×869266369² = 1511248040548888322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (869266339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 434633184 + 434633185.

It is an arithmetic number, because the mean of its divisors is an integer number (434633185).

Almost surely, 2^869266369 is an apocalyptic number.

It is an amenable number.

869266369 is a deficient number, since it is larger than the sum of its proper divisors (1).

869266369 is an equidigital number, since it uses as much as digits as its factorization.

869266369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5038848, while the sum is 55.

The square root of 869266369 is about 29483.3235745226. The cubic root of 869266369 is about 954.3718607262.

The spelling of 869266369 in words is "eight hundred sixty-nine million, two hundred sixty-six thousand, three hundred sixty-nine".