129630793 has 2 divisors, whose sum is σ = 129630794. Its totient is φ = 129630792.

The previous prime is 129630791. The next prime is 129630799. The reversal of 129630793 is 397036921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70694464 + 58936329 = 8408^2 + 7677^2 .

It is a cyclic number.

It is not a de Polignac number, because 129630793 - 2¹ = 129630791 is a prime.

Together with 129630791, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (129630791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64815396 + 64815397.

It is an arithmetic number, because the mean of its divisors is an integer number (64815397).

Almost surely, 2^129630793 is an apocalyptic number.

It is an amenable number.

129630793 is a deficient number, since it is larger than the sum of its proper divisors (1).

129630793 is an equidigital number, since it uses as much as digits as its factorization.

129630793 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 61236, while the sum is 40.

The square root of 129630793 is about 11385.5519409469. The cubic root of 129630793 is about 506.0996759794.

The spelling of 129630793 in words is "one hundred twenty-nine million, six hundred thirty thousand, seven hundred ninety-three".