129389748 has 48 divisors (see below), whose sum is σ = 310153536. Its totient is φ = 41966080.

The previous prime is 129389717. The next prime is 129389783. The reversal of 129389748 is 847983921.

It is a self number, because there is not a number n which added to its sum of digits gives 129389748.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82540 + ... + 84092.

It is an arithmetic number, because the mean of its divisors is an integer number (6461532).

Almost surely, 2^129389748 is an apocalyptic number.

It is an amenable number.

129389748 is an abundant number, since it is smaller than the sum of its proper divisors (180763788).

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

129389748 is a wasteful number, since it uses less digits than its factorization.

129389748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1744 (or 1742 counting only the distinct ones).

The product of its digits is 870912, while the sum is 51.

The square root of 129389748 is about 11374.9614504841. The cubic root of 129389748 is about 505.7857883969.

The spelling of 129389748 in words is "one hundred twenty-nine million, three hundred eighty-nine thousand, seven hundred forty-eight".