129643093 has 4 divisors (see below), whose sum is σ = 129840480. Its totient is φ = 129445708.

The previous prime is 129643091. The next prime is 129643097. The reversal of 129643093 is 390346921.

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, and also an emirpimes, since its reverse is a distinct semiprime: 390346921 = 101 ⋅3864821.

It is a cyclic number.

It is not a de Polignac number, because 129643093 - 2¹ = 129643091 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129643091) 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, 97705 + ... + 99022.

It is an arithmetic number, because the mean of its divisors is an integer number (32460120).

Almost surely, 2^129643093 is an apocalyptic number.

It is an amenable number.

129643093 is a deficient number, since it is larger than the sum of its proper divisors (197387).

129643093 is an equidigital number, since it uses as much as digits as its factorization.

129643093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197386.

The product of its (nonzero) digits is 34992, while the sum is 37.

The square root of 129643093 is about 11386.0920864008. The cubic root of 129643093 is about 506.1156825393.

The spelling of 129643093 in words is "one hundred twenty-nine million, six hundred forty-three thousand, ninety-three".