129944748 has 24 divisors (see below), whose sum is σ = 303449328. Its totient is φ = 43279936.

The previous prime is 129944729. The next prime is 129944761. The reversal of 129944748 is 847449921.

It is a junction number, because it is equal to n+sod(n) for n = 129944697 and 129944706.

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, 14290 + ... + 21542.

It is an arithmetic number, because the mean of its divisors is an integer number (12643722).

Almost surely, 2^129944748 is an apocalyptic number.

It is an amenable number.

129944748 is an abundant number, since it is smaller than the sum of its proper divisors (173504580).

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

129944748 is a wasteful number, since it uses less digits than its factorization.

129944748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8753 (or 8751 counting only the distinct ones).

The product of its digits is 580608, while the sum is 48.

The square root of 129944748 is about 11399.3310330036. The cubic root of 129944748 is about 506.5079236846.

The spelling of 129944748 in words is "one hundred twenty-nine million, nine hundred forty-four thousand, seven hundred forty-eight".