129970008 has 96 divisors (see below), whose sum is σ = 417231360. Its totient is φ = 37130400.

The previous prime is 129969943. The next prime is 129970019. The reversal of 129970008 is 800079921.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8833 + ... + 18383.

It is an arithmetic number, because the mean of its divisors is an integer number (4346160).

Almost surely, 2^129970008 is an apocalyptic number.

129970008 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 129970008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (208615680).

129970008 is an abundant number, since it is smaller than the sum of its proper divisors (287261352).

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

129970008 is an equidigital number, since it uses as much as digits as its factorization.

129970008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9579 (or 9563 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 36.

The square root of 129970008 is about 11400.4389389181. The cubic root of 129970008 is about 506.5407416358.

The spelling of 129970008 in words is "one hundred twenty-nine million, nine hundred seventy thousand, eight".