129829149 has 10 divisors (see below), whose sum is σ = 193942430. Its totient is φ = 86552712.

The previous prime is 129829121. The next prime is 129829207. The reversal of 129829149 is 941928921.

It can be written as a sum of positive squares in only one way, i.e., 76685049 + 53144100 = 8757^2 + 7290^2 .

It is not a de Polignac number, because 129829149 - 2⁹ = 129828637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129829849) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 801334 + ... + 801495.

It is an arithmetic number, because the mean of its divisors is an integer number (19394243).

Almost surely, 2^129829149 is an apocalyptic number.

It is an amenable number.

129829149 is a deficient number, since it is larger than the sum of its proper divisors (64113281).

129829149 is an equidigital number, since it uses as much as digits as its factorization.

129829149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1602841 (or 1602832 counting only the distinct ones).

The product of its digits is 93312, while the sum is 45.

The square root of 129829149 is about 11394.2594757185. The cubic root of 129829149 is about 506.3576824435.

The spelling of 129829149 in words is "one hundred twenty-nine million, eight hundred twenty-nine thousand, one hundred forty-nine".