8129873 has 2 divisors, whose sum is σ = 8129874. Its totient is φ = 8129872.

The previous prime is 8129839. The next prime is 8129903. The reversal of 8129873 is 3789218.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8111104 + 18769 = 2848^2 + 137^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8129873 is a prime.

It is a super-2 number, since 2×8129873² = 132189669992258, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8129273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4064936 + 4064937.

It is an arithmetic number, because the mean of its divisors is an integer number (4064937).

Almost surely, 2^8129873 is an apocalyptic number.

It is an amenable number.

8129873 is a deficient number, since it is larger than the sum of its proper divisors (1).

8129873 is an equidigital number, since it uses as much as digits as its factorization.

8129873 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24192, while the sum is 38.

The square root of 8129873 is about 2851.2932153674. The cubic root of 8129873 is about 201.0764706596.

The spelling of 8129873 in words is "eight million, one hundred twenty-nine thousand, eight hundred seventy-three".