129448238 has 8 divisors (see below), whose sum is σ = 194634840. Its totient is φ = 64569960.

The previous prime is 129448201. The next prime is 129448247. The reversal of 129448238 is 832844921.

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

It is a junction number, because it is equal to n+sod(n) for n = 129448195 and 129448204.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76028 + ... + 77711.

It is an arithmetic number, because the mean of its divisors is an integer number (24329355).

Almost surely, 2^129448238 is an apocalyptic number.

129448238 is a deficient number, since it is larger than the sum of its proper divisors (65186602).

129448238 is a wasteful number, since it uses less digits than its factorization.

129448238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154162.

The product of its digits is 110592, while the sum is 41.

The square root of 129448238 is about 11377.5321577221. The cubic root of 129448238 is about 505.8619895763.

The spelling of 129448238 in words is "one hundred twenty-nine million, four hundred forty-eight thousand, two hundred thirty-eight".