129889107 has 24 divisors (see below), whose sum is σ = 194555088. Its totient is φ = 83443200.

The previous prime is 129889079. The next prime is 129889117. The reversal of 129889107 is 701988921.

It is not a de Polignac number, because 129889107 - 2⁸ = 129888851 is a prime.

It is not an unprimeable number, because it can be changed into a prime (129889117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28507 + ... + 32747.

It is an arithmetic number, because the mean of its divisors is an integer number (8106462).

Almost surely, 2^129889107 is an apocalyptic number.

129889107 is a deficient number, since it is larger than the sum of its proper divisors (64665981).

129889107 is a wasteful number, since it uses less digits than its factorization.

129889107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4371 (or 4368 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 45.

The square root of 129889107 is about 11396.8902337436. The cubic root of 129889107 is about 506.4356195418.

The spelling of 129889107 in words is "one hundred twenty-nine million, eight hundred eighty-nine thousand, one hundred seven".