129983563 has 2 divisors, whose sum is σ = 129983564. Its totient is φ = 129983562.

The previous prime is 129983543. The next prime is 129983593. The reversal of 129983563 is 365389921.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 129983563 - 2⁵ = 129983531 is a prime.

It is not a weakly prime, because it can be changed into another prime (129983533) 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, 64991781 + 64991782.

It is an arithmetic number, because the mean of its divisors is an integer number (64991782).

Almost surely, 2^129983563 is an apocalyptic number.

129983563 is a deficient number, since it is larger than the sum of its proper divisors (1).

129983563 is an equidigital number, since it uses as much as digits as its factorization.

129983563 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 349920, while the sum is 46.

The square root of 129983563 is about 11401.0334180722. The cubic root of 129983563 is about 506.5583506241.

It can be divided in two parts, 12998 and 3563, that added together give a palindrome (16561).

The spelling of 129983563 in words is "one hundred twenty-nine million, nine hundred eighty-three thousand, five hundred sixty-three".