129889907 has 8 divisors (see below), whose sum is σ = 153234432. Its totient is φ = 107742600.

The previous prime is 129889891. The next prime is 129889913. The reversal of 129889907 is 709988921.

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

It is not a de Polignac number, because 129889907 - 2⁴ = 129889891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129889307) 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, 299069 + ... + 299502.

It is an arithmetic number, because the mean of its divisors is an integer number (19154304).

Almost surely, 2^129889907 is an apocalyptic number.

129889907 is a deficient number, since it is larger than the sum of its proper divisors (23344525).

129889907 is an equidigital number, since it uses as much as digits as its factorization.

129889907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 598609.

The product of its (nonzero) digits is 653184, while the sum is 53.

The square root of 129889907 is about 11396.9253309829. The cubic root of 129889907 is about 506.4366592689.

The spelling of 129889907 in words is "one hundred twenty-nine million, eight hundred eighty-nine thousand, nine hundred seven".