169689241 has 2 divisors, whose sum is σ = 169689242. Its totient is φ = 169689240.

The previous prime is 169689227. The next prime is 169689253. The reversal of 169689241 is 142986961.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 169104016 + 585225 = 13004^2 + 765^2 .

It is a cyclic number.

It is not a de Polignac number, because 169689241 - 2²⁵ = 136134809 is a prime.

It is a super-2 number, since 2×169689241² = 57588877022312162, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 169689191 and 169689200.

It is not a weakly prime, because it can be changed into another prime (169689281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84844620 + 84844621.

It is an arithmetic number, because the mean of its divisors is an integer number (84844621).

Almost surely, 2^169689241 is an apocalyptic number.

It is an amenable number.

169689241 is a deficient number, since it is larger than the sum of its proper divisors (1).

169689241 is an equidigital number, since it uses as much as digits as its factorization.

169689241 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 186624, while the sum is 46.

The square root of 169689241 is about 13026.4822956929. The cubic root of 169689241 is about 553.6280710304.

The spelling of 169689241 in words is "one hundred sixty-nine million, six hundred eighty-nine thousand, two hundred forty-one".