129786323 has 2 divisors, whose sum is σ = 129786324. Its totient is φ = 129786322.

The previous prime is 129786299. The next prime is 129786329. The reversal of 129786323 is 323687921.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 129786323 - 2²⁴ = 113009107 is a prime.

It is not a weakly prime, because it can be changed into another prime (129786329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64893161 + 64893162.

It is an arithmetic number, because the mean of its divisors is an integer number (64893162).

Almost surely, 2^129786323 is an apocalyptic number.

129786323 is a deficient number, since it is larger than the sum of its proper divisors (1).

129786323 is an equidigital number, since it uses as much as digits as its factorization.

129786323 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108864, while the sum is 41.

The square root of 129786323 is about 11392.3800410625. The cubic root of 129786323 is about 506.3019998814.

The spelling of 129786323 in words is "one hundred twenty-nine million, seven hundred eighty-six thousand, three hundred twenty-three".