169689413 has 2 divisors, whose sum is σ = 169689414. Its totient is φ = 169689412.

The previous prime is 169689407. The next prime is 169689419. The reversal of 169689413 is 314986961.

It is a balanced prime because it is at equal distance from previous prime (169689407) and next prime (169689419).

It can be written as a sum of positive squares in only one way, i.e., 93354244 + 76335169 = 9662^2 + 8737^2 .

It is an emirp because it is prime and its reverse (314986961) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 169689413 - 2¹⁴ = 169673029 is a prime.

It is a Sophie Germain 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 (169689419) 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, 84844706 + 84844707.

It is an arithmetic number, because the mean of its divisors is an integer number (84844707).

Almost surely, 2^169689413 is an apocalyptic number.

It is an amenable number.

169689413 is a deficient number, since it is larger than the sum of its proper divisors (1).

169689413 is an equidigital number, since it uses as much as digits as its factorization.

169689413 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 279936, while the sum is 47.

The square root of 169689413 is about 13026.4888976270. The cubic root of 169689413 is about 553.6282580860.

The spelling of 169689413 in words is "one hundred sixty-nine million, six hundred eighty-nine thousand, four hundred thirteen".