129659448 has 32 divisors (see below), whose sum is σ = 331689600. Its totient is φ = 42214368.

The previous prime is 129659437. The next prime is 129659471. The reversal of 129659448 is 844956921.

It is a junction number, because it is equal to n+sod(n) for n = 129659397 and 129659406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61788 + ... + 63851.

It is an arithmetic number, because the mean of its divisors is an integer number (10365300).

Almost surely, 2^129659448 is an apocalyptic number.

It is an amenable number.

129659448 is an abundant number, since it is smaller than the sum of its proper divisors (202030152).

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

129659448 is a wasteful number, since it uses less digits than its factorization.

129659448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125691 (or 125687 counting only the distinct ones).

The product of its digits is 622080, while the sum is 48.

The square root of 129659448 is about 11386.8102645122. The cubic root of 129659448 is about 506.1369644905.

The spelling of 129659448 in words is "one hundred twenty-nine million, six hundred fifty-nine thousand, four hundred forty-eight".