129298833 has 24 divisors (see below), whose sum is σ = 193904256. Its totient is φ = 82965600.

The previous prime is 129298823. The next prime is 129298837. The reversal of 129298833 is 338892921.

It is not a de Polignac number, because 129298833 - 2⁴ = 129298817 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (129298837) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23298 + ... + 28308.

It is an arithmetic number, because the mean of its divisors is an integer number (8079344).

Almost surely, 2^129298833 is an apocalyptic number.

It is an amenable number.

129298833 is a deficient number, since it is larger than the sum of its proper divisors (64605423).

129298833 is a wasteful number, since it uses less digits than its factorization.

129298833 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5125 (or 5122 counting only the distinct ones).

The product of its digits is 186624, while the sum is 45.

The square root of 129298833 is about 11370.9644709673. The cubic root of 129298833 is about 505.6672980994.

The spelling of 129298833 in words is "one hundred twenty-nine million, two hundred ninety-eight thousand, eight hundred thirty-three".