129609226 has 8 divisors (see below), whose sum is σ = 196301664. Its totient is φ = 64175340.

The previous prime is 129609223. The next prime is 129609239. The reversal of 129609226 is 622906921.

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 (129609223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 314380 + ... + 314791.

It is an arithmetic number, because the mean of its divisors is an integer number (24537708).

Almost surely, 2^129609226 is an apocalyptic number.

129609226 is a deficient number, since it is larger than the sum of its proper divisors (66692438).

129609226 is a wasteful number, since it uses less digits than its factorization.

129609226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 629276.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 129609226 is about 11384.6047801406. The cubic root of 129609226 is about 506.0716073988.

The spelling of 129609226 in words is "one hundred twenty-nine million, six hundred nine thousand, two hundred twenty-six".