129759438 has 16 divisors (see below), whose sum is σ = 260021376. Its totient is φ = 43169400.

The previous prime is 129759437. The next prime is 129759517. The reversal of 129759438 is 834957921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129759437) 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 7 ways as a sum of consecutive naturals, for example, 17538 + ... + 23813.

It is an arithmetic number, because the mean of its divisors is an integer number (16251336).

Almost surely, 2^129759438 is an apocalyptic number.

129759438 is an abundant number, since it is smaller than the sum of its proper divisors (130261938).

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

129759438 is a wasteful number, since it uses less digits than its factorization.

129759438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41879.

The product of its digits is 544320, while the sum is 48.

The square root of 129759438 is about 11391.2000245804. The cubic root of 129759438 is about 506.2670376220.

The spelling of 129759438 in words is "one hundred twenty-nine million, seven hundred fifty-nine thousand, four hundred thirty-eight".