129968994 has 8 divisors (see below), whose sum is σ = 259938000. Its totient is φ = 43322996.

The previous prime is 129968989. The next prime is 129969071. The reversal of 129968994 is 499869921.

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

129968994 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10830744 + ... + 10830755.

It is an arithmetic number, because the mean of its divisors is an integer number (32492250).

Almost surely, 2^129968994 is an apocalyptic number.

129968994 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

129968994 is a wasteful number, since it uses less digits than its factorization.

129968994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21661504.

The product of its digits is 2519424, while the sum is 57.

The square root of 129968994 is about 11400.3944668595. The cubic root of 129968994 is about 506.5394243225.

The spelling of 129968994 in words is "one hundred twenty-nine million, nine hundred sixty-eight thousand, nine hundred ninety-four".