129847713 has 4 divisors (see below), whose sum is σ = 173130288. Its totient is φ = 86565140.

The previous prime is 129847709. The next prime is 129847723. The reversal of 129847713 is 317748921.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 129847713 - 2² = 129847709 is a prime.

It is not an unprimeable number, because it can be changed into a prime (129847723) 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, 21641283 + ... + 21641288.

It is an arithmetic number, because the mean of its divisors is an integer number (43282572).

Almost surely, 2^129847713 is an apocalyptic number.

It is an amenable number.

129847713 is a deficient number, since it is larger than the sum of its proper divisors (43282575).

129847713 is an equidigital number, since it uses as much as digits as its factorization.

129847713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43282574.

The product of its digits is 84672, while the sum is 42.

The square root of 129847713 is about 11395.0740673328. The cubic root of 129847713 is about 506.3818156372.

The spelling of 129847713 in words is "one hundred twenty-nine million, eight hundred forty-seven thousand, seven hundred thirteen".