129469 has 2 divisors, whose sum is σ = 129470. Its totient is φ = 129468.

The previous prime is 129461. The next prime is 129491. The reversal of 129469 is 964921.

It is a happy number.

129469 is nontrivially palindromic in base 4.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 84100 + 45369 = 290^2 + 213^2 .

It is a cyclic number.

It is not a de Polignac number, because 129469 - 2³ = 129461 is a prime.

It is a super-2 number, since 2×129469² = 33524443922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 129469.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129461) 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, 64734 + 64735.

It is an arithmetic number, because the mean of its divisors is an integer number (64735).

2¹²⁹⁴⁶⁹ is an apocalyptic number.

It is an amenable number.

129469 is a deficient number, since it is larger than the sum of its proper divisors (1).

129469 is an equidigital number, since it uses as much as digits as its factorization.

129469 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3888, while the sum is 31.

The square root of 129469 is about 359.8180095548. The cubic root of 129469 is about 50.5889032934.

The spelling of 129469 in words is "one hundred twenty-nine thousand, four hundred sixty-nine".