129789395 has 32 divisors (see below), whose sum is σ = 165364416. Its totient is φ = 97689600.

The previous prime is 129789389. The next prime is 129789397. The reversal of 129789395 is 593987921.

It is not a de Polignac number, because 129789395 - 2⁸ = 129789139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129789397) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1212932 + ... + 1213038.

It is an arithmetic number, because the mean of its divisors is an integer number (5167638).

Almost surely, 2^129789395 is an apocalyptic number.

129789395 is a deficient number, since it is larger than the sum of its proper divisors (35575021).

129789395 is a wasteful number, since it uses less digits than its factorization.

129789395 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311.

The product of its digits is 1224720, while the sum is 53.

The square root of 129789395 is about 11392.5148672275. The cubic root of 129789395 is about 506.3059945177.

The spelling of 129789395 in words is "one hundred twenty-nine million, seven hundred eighty-nine thousand, three hundred ninety-five".