129903383 has 12 divisors (see below), whose sum is σ = 136231368. Its totient is φ = 123846240.

The previous prime is 129903377. The next prime is 129903401. The reversal of 129903383 is 383309921.

It is not a de Polignac number, because 129903383 - 2⁸ = 129903127 is a prime.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129903313) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 68873 + ... + 70733.

It is an arithmetic number, because the mean of its divisors is an integer number (11352614).

Almost surely, 2^129903383 is an apocalyptic number.

129903383 is a deficient number, since it is larger than the sum of its proper divisors (6327985).

129903383 is an equidigital number, since it uses as much as digits as its factorization.

129903383 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2002 (or 1973 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 38.

The square root of 129903383 is about 11397.5165277353. The cubic root of 129903383 is about 506.4541728298.

The spelling of 129903383 in words is "one hundred twenty-nine million, nine hundred three thousand, three hundred eighty-three".