129044847 has 8 divisors (see below), whose sum is σ = 177610240. Its totient is φ = 83254680.

The previous prime is 129044791. The next prime is 129044899. The reversal of 129044847 is 748440921.

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

It is not a de Polignac number, because 129044847 - 2¹⁴ = 129028463 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 (129044647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 693697 + ... + 693882.

It is an arithmetic number, because the mean of its divisors is an integer number (22201280).

Almost surely, 2^129044847 is an apocalyptic number.

129044847 is a deficient number, since it is larger than the sum of its proper divisors (48565393).

129044847 is a wasteful number, since it uses less digits than its factorization.

129044847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1387613.

The product of its (nonzero) digits is 64512, while the sum is 39.

The square root of 129044847 is about 11359.7907991301. The cubic root of 129044847 is about 505.3359813660.

The spelling of 129044847 in words is "one hundred twenty-nine million, forty-four thousand, eight hundred forty-seven".