168869429 has 2 divisors, whose sum is σ = 168869430. Its totient is φ = 168869428.

The previous prime is 168869417. The next prime is 168869509. The reversal of 168869429 is 924968861.

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., 101465329 + 67404100 = 10073^2 + 8210^2 .

It is a cyclic number.

It is not a de Polignac number, because 168869429 - 2¹⁶ = 168803893 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (168866429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84434714 + 84434715.

It is an arithmetic number, because the mean of its divisors is an integer number (84434715).

Almost surely, 2^168869429 is an apocalyptic number.

It is an amenable number.

168869429 is a deficient number, since it is larger than the sum of its proper divisors (1).

168869429 is an equidigital number, since it uses as much as digits as its factorization.

168869429 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1492992, while the sum is 53.

The square root of 168869429 is about 12994.9770680829. The cubic root of 168869429 is about 552.7350585570.

It can be divided in two parts, 1688 and 69429, that added together give a palindrome (71117).

The spelling of 168869429 in words is "one hundred sixty-eight million, eight hundred sixty-nine thousand, four hundred twenty-nine".