129970957 has 2 divisors, whose sum is σ = 129970958. Its totient is φ = 129970956.

The previous prime is 129970949. The next prime is 129970993. The reversal of 129970957 is 759079921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 117375556 + 12595401 = 10834^2 + 3549^2 .

It is an emirp because it is prime and its reverse (759079921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 129970957 - 2³ = 129970949 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 129970957.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129970157) 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, 64985478 + 64985479.

It is an arithmetic number, because the mean of its divisors is an integer number (64985479).

Almost surely, 2^129970957 is an apocalyptic number.

It is an amenable number.

129970957 is a deficient number, since it is larger than the sum of its proper divisors (1).

129970957 is an equidigital number, since it uses as much as digits as its factorization.

129970957 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 357210, while the sum is 49.

The square root of 129970957 is about 11400.4805600466. The cubic root of 129970957 is about 506.5419744997.

The spelling of 129970957 in words is "one hundred twenty-nine million, nine hundred seventy thousand, nine hundred fifty-seven".