129989704 has 16 divisors (see below), whose sum is σ = 262479420. Its totient is φ = 59995200.

The previous prime is 129989693. The next prime is 129989723. The reversal of 129989704 is 407989921.

It can be written as a sum of positive squares in 2 ways, for example, as 96000804 + 33988900 = 9798^2 + 5830^2 .

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, 624847 + ... + 625054.

Almost surely, 2^129989704 is an apocalyptic number.

It is an amenable number.

129989704 is an abundant number, since it is smaller than the sum of its proper divisors (132489716).

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

129989704 is a wasteful number, since it uses less digits than its factorization.

129989704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1249920 (or 1249916 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 49.

The square root of 129989704 is about 11401.3027325828. The cubic root of 129989704 is about 506.5663278529.

The spelling of 129989704 in words is "one hundred twenty-nine million, nine hundred eighty-nine thousand, seven hundred four".