869669233 has 2 divisors, whose sum is σ = 869669234. Its totient is φ = 869669232.

The previous prime is 869669231. The next prime is 869669267. The reversal of 869669233 is 332966968.

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., 710329104 + 159340129 = 26652^2 + 12623^2 .

It is a cyclic number.

It is not a de Polignac number, because 869669233 - 2¹ = 869669231 is a prime.

Together with 869669231, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (869669231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 434834616 + 434834617.

It is an arithmetic number, because the mean of its divisors is an integer number (434834617).

Almost surely, 2^869669233 is an apocalyptic number.

It is an amenable number.

869669233 is a deficient number, since it is larger than the sum of its proper divisors (1).

869669233 is an equidigital number, since it uses as much as digits as its factorization.

869669233 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2519424, while the sum is 52.

The square root of 869669233 is about 29490.1548486948. The cubic root of 869669233 is about 954.5192734173.

The spelling of 869669233 in words is "eight hundred sixty-nine million, six hundred sixty-nine thousand, two hundred thirty-three".