129770911 has 8 divisors (see below), whose sum is σ = 142143120. Its totient is φ = 117925248.

The previous prime is 129770909. The next prime is 129770957. The reversal of 129770911 is 119077921.

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 129770911 - 2¹ = 129770909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129770111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 131121 + ... + 132106.

It is an arithmetic number, because the mean of its divisors is an integer number (17767890).

Almost surely, 2^129770911 is an apocalyptic number.

129770911 is a deficient number, since it is larger than the sum of its proper divisors (12372209).

129770911 is a wasteful number, since it uses less digits than its factorization.

129770911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263273.

The product of its (nonzero) digits is 7938, while the sum is 37.

The square root of 129770911 is about 11391.7036039391. The cubic root of 129770911 is about 506.2819581309.

The spelling of 129770911 in words is "one hundred twenty-nine million, seven hundred seventy thousand, nine hundred eleven".