869575229 has 2 divisors, whose sum is σ = 869575230. Its totient is φ = 869575228.

The previous prime is 869575183. The next prime is 869575241. The reversal of 869575229 is 922575968.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 500551129 + 369024100 = 22373^2 + 19210^2 .

It is a cyclic number.

It is not a de Polignac number, because 869575229 - 2²⁰ = 868526653 is a prime.

It is a super-2 number, since 2×869575229² = 1512322157780804882, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (869575129) by changing a digit.

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 as a sum of consecutive naturals, namely, 434787614 + 434787615.

It is an arithmetic number, because the mean of its divisors is an integer number (434787615).

Almost surely, 2^869575229 is an apocalyptic number.

It is an amenable number.

869575229 is a deficient number, since it is larger than the sum of its proper divisors (1).

869575229 is an equidigital number, since it uses as much as digits as its factorization.

869575229 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2721600, while the sum is 53.

The square root of 869575229 is about 29488.5609855754. The cubic root of 869575229 is about 954.4848803172.

The spelling of 869575229 in words is "eight hundred sixty-nine million, five hundred seventy-five thousand, two hundred twenty-nine".