129076885 has 8 divisors (see below), whose sum is σ = 177019776. Its totient is φ = 88509840.

The previous prime is 129076873. The next prime is 129076891. The reversal of 129076885 is 588670921.

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

It is not a de Polignac number, because 129076885 - 2⁵ = 129076853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1843921 + ... + 1843990.

It is an arithmetic number, because the mean of its divisors is an integer number (22127472).

Almost surely, 2^129076885 is an apocalyptic number.

It is an amenable number.

129076885 is a deficient number, since it is larger than the sum of its proper divisors (47942891).

129076885 is an equidigital number, since it uses as much as digits as its factorization.

129076885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3687923.

The product of its (nonzero) digits is 241920, while the sum is 46.

The square root of 129076885 is about 11361.2008608245. The cubic root of 129076885 is about 505.3777978737.

The spelling of 129076885 in words is "one hundred twenty-nine million, seventy-six thousand, eight hundred eighty-five".