129539007 has 30 divisors (see below), whose sum is σ = 209561352. Its totient is φ = 79707888.

The previous prime is 129538999. The next prime is 129539009. The reversal of 129539007 is 700935921.

It is not a de Polignac number, because 129539007 - 2³ = 129538999 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129539009) 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 29 ways as a sum of consecutive naturals, for example, 8958 + ... + 18420.

Almost surely, 2^129539007 is an apocalyptic number.

129539007 is a deficient number, since it is larger than the sum of its proper divisors (80022345).

129539007 is an equidigital number, since it uses as much as digits as its factorization.

129539007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9501 (or 9479 counting only the distinct ones).

The product of its (nonzero) digits is 17010, while the sum is 36.

The square root of 129539007 is about 11381.5204168863. The cubic root of 129539007 is about 505.9801986242.

The spelling of 129539007 in words is "one hundred twenty-nine million, five hundred thirty-nine thousand, seven".