129893629 has 2 divisors, whose sum is σ = 129893630. Its totient is φ = 129893628.

The previous prime is 129893597. The next prime is 129893641. The reversal of 129893629 is 926398921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 85137529 + 44756100 = 9227^2 + 6690^2 .

It is a cyclic number.

It is not a de Polignac number, because 129893629 - 2⁵ = 129893597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129893129) 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, 64946814 + 64946815.

It is an arithmetic number, because the mean of its divisors is an integer number (64946815).

Almost surely, 2^129893629 is an apocalyptic number.

It is an amenable number.

129893629 is a deficient number, since it is larger than the sum of its proper divisors (1).

129893629 is an equidigital number, since it uses as much as digits as its factorization.

129893629 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 419904, while the sum is 49.

The square root of 129893629 is about 11397.0886194677. The cubic root of 129893629 is about 506.4414965429.

The spelling of 129893629 in words is "one hundred twenty-nine million, eight hundred ninety-three thousand, six hundred twenty-nine".