129389508 has 24 divisors (see below), whose sum is σ = 335454560. Its totient is φ = 43129800.

The previous prime is 129389501. The next prime is 129389531. The reversal of 129389508 is 805983921.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (129389501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 598918 + ... + 599133.

Almost surely, 2^129389508 is an apocalyptic number.

129389508 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

129389508 is an abundant number, since it is smaller than the sum of its proper divisors (206065052).

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

129389508 is a wasteful number, since it uses less digits than its factorization.

129389508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1198064 (or 1198056 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 45.

The square root of 129389508 is about 11374.9509009929. The cubic root of 129389508 is about 505.7854756759.

The spelling of 129389508 in words is "one hundred twenty-nine million, three hundred eighty-nine thousand, five hundred eight".