129769088 has 32 divisors (see below), whose sum is σ = 272136000. Its totient is φ = 61468416.

The previous prime is 129769067. The next prime is 129769099. The reversal of 129769088 is 880967921.

It is a tau number, because it is divible by the number of its divisors (32).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24248 + ... + 29111.

It is an arithmetic number, because the mean of its divisors is an integer number (8504250).

Almost surely, 2^129769088 is an apocalyptic number.

It is an amenable number.

129769088 is an abundant number, since it is smaller than the sum of its proper divisors (142366912).

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

129769088 is an equidigital number, since it uses as much as digits as its factorization.

129769088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53392 (or 53380 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 50.

The square root of 129769088 is about 11391.6235892870. The cubic root of 129769088 is about 506.2795873984.

The spelling of 129769088 in words is "one hundred twenty-nine million, seven hundred sixty-nine thousand, eighty-eight".