129327673 has 4 divisors (see below), whose sum is σ = 129567268. Its totient is φ = 129088080.

The previous prime is 129327659. The next prime is 129327719. The reversal of 129327673 is 376723921.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17539344 + 111788329 = 4188^2 + 10573^2 .

It is a cyclic number.

It is not a de Polignac number, because 129327673 - 2⁵ = 129327641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129327613) 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, 118986 + ... + 120067.

It is an arithmetic number, because the mean of its divisors is an integer number (32391817).

Almost surely, 2^129327673 is an apocalyptic number.

It is an amenable number.

129327673 is a deficient number, since it is larger than the sum of its proper divisors (239595).

129327673 is an equidigital number, since it uses as much as digits as its factorization.

129327673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239594.

The product of its digits is 95256, while the sum is 40.

The square root of 129327673 is about 11372.2325424694. The cubic root of 129327673 is about 505.7048915316.

The spelling of 129327673 in words is "one hundred twenty-nine million, three hundred twenty-seven thousand, six hundred seventy-three".