129043693 has 2 divisors, whose sum is σ = 129043694. Its totient is φ = 129043692.

The previous prime is 129043667. The next prime is 129043697. The reversal of 129043693 is 396340921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 122168809 + 6874884 = 11053^2 + 2622^2 .

It is a cyclic number.

It is not a de Polignac number, because 129043693 - 2¹⁷ = 128912621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129043697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64521846 + 64521847.

It is an arithmetic number, because the mean of its divisors is an integer number (64521847).

Almost surely, 2^129043693 is an apocalyptic number.

It is an amenable number.

129043693 is a deficient number, since it is larger than the sum of its proper divisors (1).

129043693 is an equidigital number, since it uses as much as digits as its factorization.

129043693 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34992, while the sum is 37.

The square root of 129043693 is about 11359.7400058276. The cubic root of 129043693 is about 505.3344750177.

The spelling of 129043693 in words is "one hundred twenty-nine million, forty-three thousand, six hundred ninety-three".