129679273 has 2 divisors, whose sum is σ = 129679274. Its totient is φ = 129679272.

The previous prime is 129679261. The next prime is 129679327. The reversal of 129679273 is 372976921.

Together with next prime (129679327) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 128210329 + 1468944 = 11323^2 + 1212^2 .

It is a cyclic number.

It is not a de Polignac number, because 129679273 - 2²¹ = 127582121 is a prime.

It is not a weakly prime, because it can be changed into another prime (129679223) 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, 64839636 + 64839637.

It is an arithmetic number, because the mean of its divisors is an integer number (64839637).

Almost surely, 2^129679273 is an apocalyptic number.

It is an amenable number.

129679273 is a deficient number, since it is larger than the sum of its proper divisors (1).

129679273 is an equidigital number, since it uses as much as digits as its factorization.

129679273 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 285768, while the sum is 46.

The square root of 129679273 is about 11387.6807559749. The cubic root of 129679273 is about 506.1627593814.

The spelling of 129679273 in words is "one hundred twenty-nine million, six hundred seventy-nine thousand, two hundred seventy-three".