129162349 has 2 divisors, whose sum is σ = 129162350. Its totient is φ = 129162348.

The previous prime is 129162329. The next prime is 129162389. The reversal of 129162349 is 943261921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 119902500 + 9259849 = 10950^2 + 3043^2 .

It is a cyclic number.

It is not a de Polignac number, because 129162349 - 2⁷ = 129162221 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 (129162329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64581174 + 64581175.

It is an arithmetic number, because the mean of its divisors is an integer number (64581175).

Almost surely, 2^129162349 is an apocalyptic number.

It is an amenable number.

129162349 is a deficient number, since it is larger than the sum of its proper divisors (1).

129162349 is an equidigital number, since it uses as much as digits as its factorization.

129162349 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23328, while the sum is 37.

The square root of 129162349 is about 11364.9614605594. The cubic root of 129162349 is about 505.4893130093.

The spelling of 129162349 in words is "one hundred twenty-nine million, one hundred sixty-two thousand, three hundred forty-nine".