129998963 has 2 divisors, whose sum is σ = 129998964. Its totient is φ = 129998962.

The previous prime is 129998923. The next prime is 129998989. The reversal of 129998963 is 369899921.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 129998963 - 2⁸ = 129998707 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 129998899 and 129998908.

It is not a weakly prime, because it can be changed into another prime (129998923) 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, 64999481 + 64999482.

It is an arithmetic number, because the mean of its divisors is an integer number (64999482).

Almost surely, 2^129998963 is an apocalyptic number.

129998963 is a deficient number, since it is larger than the sum of its proper divisors (1).

129998963 is an equidigital number, since it uses as much as digits as its factorization.

129998963 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1889568, while the sum is 56.

The square root of 129998963 is about 11401.7087754424. The cubic root of 129998963 is about 506.5783549241.

The spelling of 129998963 in words is "one hundred twenty-nine million, nine hundred ninety-eight thousand, nine hundred sixty-three".