129066349 has 4 divisors (see below), whose sum is σ = 132067936. Its totient is φ = 126064764.

The previous prime is 129066293. The next prime is 129066383. The reversal of 129066349 is 943660921.

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 129066349 - 2¹⁵ = 129033581 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 (129066649) 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, 1500729 + ... + 1500814.

It is an arithmetic number, because the mean of its divisors is an integer number (33016984).

Almost surely, 2^129066349 is an apocalyptic number.

It is an amenable number.

129066349 is a deficient number, since it is larger than the sum of its proper divisors (3001587).

129066349 is an equidigital number, since it uses as much as digits as its factorization.

129066349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3001586.

The product of its (nonzero) digits is 69984, while the sum is 40.

The square root of 129066349 is about 11360.7371679834. The cubic root of 129066349 is about 505.3640468825.

The spelling of 129066349 in words is "one hundred twenty-nine million, sixty-six thousand, three hundred forty-nine".