129883305 has 8 divisors (see below), whose sum is σ = 207813312. Its totient is φ = 69271088.

The previous prime is 129883301. The next prime is 129883321. The reversal of 129883305 is 503388921.

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

It is a cyclic number.

It is not a de Polignac number, because 129883305 - 2² = 129883301 is a prime.

It is not an unprimeable number, because it can be changed into a prime (129883301) 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, 4329429 + ... + 4329458.

It is an arithmetic number, because the mean of its divisors is an integer number (25976664).

Almost surely, 2^129883305 is an apocalyptic number.

129883305 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

129883305 is a deficient number, since it is larger than the sum of its proper divisors (77930007).

129883305 is an equidigital number, since it uses as much as digits as its factorization.

129883305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8658895.

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 129883305 is about 11396.6356877808. The cubic root of 129883305 is about 506.4280787934.

The spelling of 129883305 in words is "one hundred twenty-nine million, eight hundred eighty-three thousand, three hundred five".