129944383 has 2 divisors, whose sum is σ = 129944384. Its totient is φ = 129944382.

The previous prime is 129944377. The next prime is 129944429. The reversal of 129944383 is 383449921.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-129944383 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129944783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64972191 + 64972192.

It is an arithmetic number, because the mean of its divisors is an integer number (64972192).

Almost surely, 2^129944383 is an apocalyptic number.

129944383 is a deficient number, since it is larger than the sum of its proper divisors (1).

129944383 is an equidigital number, since it uses as much as digits as its factorization.

129944383 is an evil number, because the sum of its binary digits is even.

The product of its digits is 186624, while the sum is 43.

The square root of 129944383 is about 11399.3150232810. The cubic root of 129944383 is about 506.5074494431.

The spelling of 129944383 in words is "one hundred twenty-nine million, nine hundred forty-four thousand, three hundred eighty-three".