129000493 has 2 divisors, whose sum is σ = 129000494. Its totient is φ = 129000492.

The previous prime is 129000449. The next prime is 129000499. The reversal of 129000493 is 394000921.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 128981449 + 19044 = 11357^2 + 138^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-129000493 is a prime.

It is a super-2 number, since 2×129000493² = 33282254388486098, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129000499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64500246 + 64500247.

It is an arithmetic number, because the mean of its divisors is an integer number (64500247).

Almost surely, 2^129000493 is an apocalyptic number.

It is an amenable number.

129000493 is a deficient number, since it is larger than the sum of its proper divisors (1).

129000493 is an equidigital number, since it uses as much as digits as its factorization.

129000493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 129000493 is about 11357.8383946947. The cubic root of 129000493 is about 505.2780783939.

The spelling of 129000493 in words is "one hundred twenty-nine million, four hundred ninety-three", and thus it is an aban number.