129199982 has 8 divisors (see below), whose sum is σ = 193848336. Its totient is φ = 64583872.

The previous prime is 129199969. The next prime is 129200009. The reversal of 129199982 is 289991921.

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

It is a self number, because there is not a number n which added to its sum of digits gives 129199982.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10583 + ... + 19245.

It is an arithmetic number, because the mean of its divisors is an integer number (24231042).

Almost surely, 2^129199982 is an apocalyptic number.

129199982 is a deficient number, since it is larger than the sum of its proper divisors (64648354).

129199982 is an equidigital number, since it uses as much as digits as its factorization.

129199982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16122.

The product of its digits is 209952, while the sum is 50.

The square root of 129199982 is about 11366.6169989140. The cubic root of 129199982 is about 505.5384017007.

The spelling of 129199982 in words is "one hundred twenty-nine million, one hundred ninety-nine thousand, nine hundred eighty-two".