129916930 has 64 divisors (see below), whose sum is σ = 280723968. Its totient is φ = 42658560.

The previous prime is 129916909. The next prime is 129916931. The reversal of 129916930 is 39619921.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (129916931) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 66244 + ... + 68176.

It is an arithmetic number, because the mean of its divisors is an integer number (4386312).

Almost surely, 2^129916930 is an apocalyptic number.

129916930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

129916930 is an abundant number, since it is smaller than the sum of its proper divisors (150807038).

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

129916930 is a wasteful number, since it uses less digits than its factorization.

129916930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2011.

The product of its (nonzero) digits is 26244, while the sum is 40.

The square root of 129916930 is about 11398.1108083752. The cubic root of 129916930 is about 506.4717774424.

The spelling of 129916930 in words is "one hundred twenty-nine million, nine hundred sixteen thousand, nine hundred thirty".