129970993 has 2 divisors, whose sum is σ = 129970994. Its totient is φ = 129970992.

The previous prime is 129970957. The next prime is 129971033. The reversal of 129970993 is 399079921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 75550864 + 54420129 = 8692^2 + 7377^2 .

It is an emirp because it is prime and its reverse (399079921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 129970993 - 2¹³ = 129962801 is a prime.

It is not a weakly prime, because it can be changed into another prime (129970903) 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, 64985496 + 64985497.

It is an arithmetic number, because the mean of its divisors is an integer number (64985497).

Almost surely, 2^129970993 is an apocalyptic number.

It is an amenable number.

129970993 is a deficient number, since it is larger than the sum of its proper divisors (1).

129970993 is an equidigital number, since it uses as much as digits as its factorization.

129970993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 275562, while the sum is 49.

The square root of 129970993 is about 11400.4821389273. The cubic root of 129970993 is about 506.5420212679.

The spelling of 129970993 in words is "one hundred twenty-nine million, nine hundred seventy thousand, nine hundred ninety-three".