129371593 has 8 divisors (see below), whose sum is σ = 139450248. Its totient is φ = 119311104.

The previous prime is 129371533. The next prime is 129371597. The reversal of 129371593 is 395173921.

It can be written as a sum of positive squares in 4 ways, for example, as 40106889 + 89264704 = 6333^2 + 9448^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 129371593 - 2¹³ = 129363401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129371597) 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, 12705 + ... + 20497.

It is an arithmetic number, because the mean of its divisors is an integer number (17431281).

Almost surely, 2^129371593 is an apocalyptic number.

129371593 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

129371593 is a deficient number, since it is larger than the sum of its proper divisors (10078655).

129371593 is a wasteful number, since it uses less digits than its factorization.

129371593 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9083.

The product of its digits is 51030, while the sum is 40.

The square root of 129371593 is about 11374.1633978065. The cubic root of 129371593 is about 505.7621312663.

The spelling of 129371593 in words is "one hundred twenty-nine million, three hundred seventy-one thousand, five hundred ninety-three".