129969039 has 16 divisors (see below), whose sum is σ = 181127520. Its totient is φ = 82790400.

The previous prime is 129968989. The next prime is 129969071. The reversal of 129969039 is 930969921.

It is not a de Polignac number, because 129969039 - 2¹² = 129964943 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129969439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 739 + ... + 16139.

It is an arithmetic number, because the mean of its divisors is an integer number (11320470).

Almost surely, 2^129969039 is an apocalyptic number.

129969039 is a deficient number, since it is larger than the sum of its proper divisors (51158481).

129969039 is a wasteful number, since it uses less digits than its factorization.

129969039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15530.

The product of its (nonzero) digits is 236196, while the sum is 48.

The square root of 129969039 is about 11400.3964404752. The cubic root of 129969039 is about 506.5394827833.

The spelling of 129969039 in words is "one hundred twenty-nine million, nine hundred sixty-nine thousand, thirty-nine".