8129956 has 6 divisors (see below), whose sum is σ = 14227430. Its totient is φ = 4064976.

The previous prime is 8129939. The next prime is 8129963. The reversal of 8129956 is 6599218.

It can be written as a sum of positive squares in only one way, i.e., 6350400 + 1779556 = 2520^2 + 1334^2 .

It is an unprimeable number.

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, 1016241 + ... + 1016248.

Almost surely, 2^8129956 is an apocalyptic number.

It is an amenable number.

8129956 is a deficient number, since it is larger than the sum of its proper divisors (6097474).

8129956 is a wasteful number, since it uses less digits than its factorization.

8129956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2032493 (or 2032491 counting only the distinct ones).

The product of its digits is 38880, while the sum is 40.

The square root of 8129956 is about 2851.3077701293. The cubic root of 8129956 is about 201.0771549380.

The spelling of 8129956 in words is "eight million, one hundred twenty-nine thousand, nine hundred fifty-six".