129746393 has 4 divisors (see below), whose sum is σ = 148281600. Its totient is φ = 111211188.

The previous prime is 129746389. The next prime is 129746429. The reversal of 129746393 is 393647921.

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 129746393 - 2² = 129746389 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129746593) 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, 9267593 + ... + 9267606.

It is an arithmetic number, because the mean of its divisors is an integer number (37070400).

Almost surely, 2^129746393 is an apocalyptic number.

It is an amenable number.

129746393 is a deficient number, since it is larger than the sum of its proper divisors (18535207).

129746393 is an equidigital number, since it uses as much as digits as its factorization.

129746393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18535206.

The product of its digits is 244944, while the sum is 44.

The square root of 129746393 is about 11390.6274190670. The cubic root of 129746393 is about 506.2500716761.

The spelling of 129746393 in words is "one hundred twenty-nine million, seven hundred forty-six thousand, three hundred ninety-three".