129480985 has 8 divisors (see below), whose sum is σ = 156276360. Its totient is φ = 102985344.

The previous prime is 129480977. The next prime is 129480997. The reversal of 129480985 is 589084921.

It can be written as a sum of positive squares in 4 ways, for example, as 4756761 + 124724224 = 2181^2 + 11168^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 129480985 - 2³ = 129480977 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 73980 + ... + 75709.

It is an arithmetic number, because the mean of its divisors is an integer number (19534545).

Almost surely, 2^129480985 is an apocalyptic number.

It is an amenable number.

129480985 is a deficient number, since it is larger than the sum of its proper divisors (26795375).

129480985 is a wasteful number, since it uses less digits than its factorization.

129480985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149867.

The product of its (nonzero) digits is 207360, while the sum is 46.

The square root of 129480985 is about 11378.9711749349. The cubic root of 129480985 is about 505.9046425732.

The spelling of 129480985 in words is "one hundred twenty-nine million, four hundred eighty thousand, nine hundred eighty-five".