129944384 has 14 divisors (see below), whose sum is σ = 257858514. Its totient is φ = 64972160.

The previous prime is 129944383. The next prime is 129944429. The reversal of 129944384 is 483449921.

It can be written as a sum of positive squares in only one way, i.e., 73273600 + 56670784 = 8560^2 + 7528^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129944383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1015127 + ... + 1015254.

Almost surely, 2^129944384 is an apocalyptic number.

It is an amenable number.

129944384 is a deficient number, since it is larger than the sum of its proper divisors (127914130).

129944384 is an equidigital number, since it uses as much as digits as its factorization.

129944384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2030393 (or 2030383 counting only the distinct ones).

The product of its digits is 248832, while the sum is 44.

The square root of 129944384 is about 11399.3150671433. The cubic root of 129944384 is about 506.5074507424.

The spelling of 129944384 in words is "one hundred twenty-nine million, nine hundred forty-four thousand, three hundred eighty-four".