129622847 has 2 divisors, whose sum is σ = 129622848. Its totient is φ = 129622846.

The previous prime is 129622799. The next prime is 129622859. The reversal of 129622847 is 748226921.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 129622847 - 2¹⁸ = 129360703 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129622897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64811423 + 64811424.

It is an arithmetic number, because the mean of its divisors is an integer number (64811424).

Almost surely, 2^129622847 is an apocalyptic number.

129622847 is a deficient number, since it is larger than the sum of its proper divisors (1).

129622847 is an equidigital number, since it uses as much as digits as its factorization.

129622847 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96768, while the sum is 41.

The square root of 129622847 is about 11385.2029845761. The cubic root of 129622847 is about 506.0893349432.

The spelling of 129622847 in words is "one hundred twenty-nine million, six hundred twenty-two thousand, eight hundred forty-seven".