129703793 has 2 divisors, whose sum is σ = 129703794. Its totient is φ = 129703792.

The previous prime is 129703729. The next prime is 129703799. The reversal of 129703793 is 397307921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 116035984 + 13667809 = 10772^2 + 3697^2 .

It is a cyclic number.

It is not a de Polignac number, because 129703793 - 2⁶ = 129703729 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 129703793.

It is not a weakly prime, because it can be changed into another prime (129703799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64851896 + 64851897.

It is an arithmetic number, because the mean of its divisors is an integer number (64851897).

Almost surely, 2^129703793 is an apocalyptic number.

It is an amenable number.

129703793 is a deficient number, since it is larger than the sum of its proper divisors (1).

129703793 is an equidigital number, since it uses as much as digits as its factorization.

129703793 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 71442, while the sum is 41.

The square root of 129703793 is about 11388.7573070990. The cubic root of 129703793 is about 506.1946594387.

The spelling of 129703793 in words is "one hundred twenty-nine million, seven hundred three thousand, seven hundred ninety-three".