129885697 has 8 divisors (see below), whose sum is σ = 131467392. Its totient is φ = 128310000.

The previous prime is 129885673. The next prime is 129885713. The reversal of 129885697 is 796588921.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-129885697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129885667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54072 + ... + 56422.

It is an arithmetic number, because the mean of its divisors is an integer number (16433424).

Almost surely, 2^129885697 is an apocalyptic number.

It is an amenable number.

129885697 is a deficient number, since it is larger than the sum of its proper divisors (1581695).

129885697 is a wasteful number, since it uses less digits than its factorization.

129885697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2999.

The product of its digits is 2177280, while the sum is 55.

The square root of 129885697 is about 11396.7406305487. The cubic root of 129885697 is about 506.4311876572.

The spelling of 129885697 in words is "one hundred twenty-nine million, eight hundred eighty-five thousand, six hundred ninety-seven".