129449244 has 48 divisors (see below), whose sum is σ = 316173312. Its totient is φ = 41143872.

The previous prime is 129449239. The next prime is 129449251. The reversal of 129449244 is 442944921.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 127282 + ... + 128294.

It is an arithmetic number, because the mean of its divisors is an integer number (6586944).

Almost surely, 2^129449244 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 129449244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (158086656).

129449244 is an abundant number, since it is smaller than the sum of its proper divisors (186724068).

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

129449244 is a wasteful number, since it uses less digits than its factorization.

129449244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1506 (or 1504 counting only the distinct ones).

The product of its digits is 82944, while the sum is 39.

The square root of 129449244 is about 11377.5763675750. The cubic root of 129449244 is about 505.8632999993.

The spelling of 129449244 in words is "one hundred twenty-nine million, four hundred forty-nine thousand, two hundred forty-four".