129409298 has 8 divisors (see below), whose sum is σ = 194557440. Its totient is φ = 64556820.

The previous prime is 129409297. The next prime is 129409307. The reversal of 129409298 is 892904921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (129409297) 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 in 3 ways as a sum of consecutive naturals, for example, 72818 + ... + 74573.

It is an arithmetic number, because the mean of its divisors is an integer number (24319680).

Almost surely, 2^129409298 is an apocalyptic number.

129409298 is a deficient number, since it is larger than the sum of its proper divisors (65148142).

129409298 is a wasteful number, since it uses less digits than its factorization.

129409298 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147832.

The product of its (nonzero) digits is 93312, while the sum is 44.

The square root of 129409298 is about 11375.8207615978. The cubic root of 129409298 is about 505.8112608277.

The spelling of 129409298 in words is "one hundred twenty-nine million, four hundred nine thousand, two hundred ninety-eight".