129995008 has 144 divisors (see below), whose sum is σ = 315233856. Its totient is φ = 52715520.

The previous prime is 129995003. The next prime is 129995009. The reversal of 129995008 is 800599921.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (129995003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1940191 + ... + 1940257.

It is an arithmetic number, because the mean of its divisors is an integer number (2189124).

Almost surely, 2^129995008 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 129995008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (157616928).

129995008 is an abundant number, since it is smaller than the sum of its proper divisors (185238848).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

129995008 is a wasteful number, since it uses less digits than its factorization.

129995008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160 (or 146 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 43.

The square root of 129995008 is about 11401.5353352081. The cubic root of 129995008 is about 506.5732176069.

The spelling of 129995008 in words is "one hundred twenty-nine million, nine hundred ninety-five thousand, eight".