129439060 has 12 divisors (see below), whose sum is σ = 271822068. Its totient is φ = 51775616.

The previous prime is 129439027. The next prime is 129439069. The reversal of 129439060 is 60934921.

It can be written as a sum of positive squares in 2 ways, for example, as 16144324 + 113294736 = 4018^2 + 10644^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129439069) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3235957 + ... + 3235996.

It is an arithmetic number, because the mean of its divisors is an integer number (22651839).

Almost surely, 2^129439060 is an apocalyptic number.

129439060 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

129439060 is an abundant number, since it is smaller than the sum of its proper divisors (142383008).

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

129439060 is a wasteful number, since it uses less digits than its factorization.

129439060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6471962 (or 6471960 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 129439060 is about 11377.1288117873. The cubic root of 129439060 is about 505.8500339325.

The spelling of 129439060 in words is "one hundred twenty-nine million, four hundred thirty-nine thousand, sixty".