129989932 has 24 divisors (see below), whose sum is σ = 231417536. Its totient is φ = 63877248.

The previous prime is 129989927. The next prime is 129989957. The reversal of 129989932 is 239989921.

It is a self number, because there is not a number n which added to its sum of digits gives 129989932.

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 7 ways as a sum of consecutive naturals, for example, 106558 + ... + 107770.

Almost surely, 2^129989932 is an apocalyptic number.

It is an amenable number.

129989932 is a deficient number, since it is larger than the sum of its proper divisors (101427604).

129989932 is a wasteful number, since it uses less digits than its factorization.

129989932 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1657 (or 1655 counting only the distinct ones).

The product of its digits is 629856, while the sum is 52.

The square root of 129989932 is about 11401.3127314358. The cubic root of 129989932 is about 506.5666240226.

The spelling of 129989932 in words is "one hundred twenty-nine million, nine hundred eighty-nine thousand, nine hundred thirty-two".