29009 has 2 divisors, whose sum is σ = 29010. Its totient is φ = 29008.

The previous prime is 28979. The next prime is 29017. The reversal of 29009 is 90092.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19600 + 9409 = 140^2 + 97^2 .

It is a cyclic number.

It is not a de Polignac number, because 29009 - 2⁸ = 28753 is a prime.

It is a Chen prime.

It is a plaindrome in base 15.

It is not a weakly prime, because it can be changed into another prime (29059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14504 + 14505.

It is an arithmetic number, because the mean of its divisors is an integer number (14505).

2²⁹⁰⁰⁹ is an apocalyptic number.

It is an amenable number.

29009 is a deficient number, since it is larger than the sum of its proper divisors (1).

29009 is an equidigital number, since it uses as much as digits as its factorization.

29009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 162, while the sum is 20.

The square root of 29009 is about 170.3202865193. The cubic root of 29009 is about 30.7263461869.

The spelling of 29009 in words is "twenty-nine thousand, nine".