129943377 has 12 divisors (see below), whose sum is σ = 192061584. Its totient is φ = 84614040.

The previous prime is 129943357. The next prime is 129943379. The reversal of 129943377 is 773349921.

It is not a de Polignac number, because 129943377 - 2¹⁰ = 129942353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (129943379) 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 11 ways as a sum of consecutive naturals, for example, 167499 + ... + 168272.

It is an arithmetic number, because the mean of its divisors is an integer number (16005132).

Almost surely, 2^129943377 is an apocalyptic number.

It is an amenable number.

129943377 is a deficient number, since it is larger than the sum of its proper divisors (62118207).

129943377 is a wasteful number, since it uses less digits than its factorization.

129943377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335820 (or 335817 counting only the distinct ones).

The product of its digits is 285768, while the sum is 45.

The square root of 129943377 is about 11399.2708977373. The cubic root of 129943377 is about 506.5061423510.

The spelling of 129943377 in words is "one hundred twenty-nine million, nine hundred forty-three thousand, three hundred seventy-seven".