8934636121 has 2 divisors, whose sum is σ = 8934636122. Its totient is φ = 8934636120.

The previous prime is 8934636119. The next prime is 8934636163. The reversal of 8934636121 is 1216364398.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5649626896 + 3285009225 = 75164^2 + 57315^2 .

It is a cyclic number.

It is not a de Polignac number, because 8934636121 - 2¹ = 8934636119 is a prime.

It is a super-2 number, since 2×8934636121² (a number of 21 digits) contains 22 as substring.

Together with 8934636119, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (8934636101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4467318060 + 4467318061.

It is an arithmetic number, because the mean of its divisors is an integer number (4467318061).

Almost surely, 2^8934636121 is an apocalyptic number.

It is an amenable number.

8934636121 is a deficient number, since it is larger than the sum of its proper divisors (1).

8934636121 is an equidigital number, since it uses as much as digits as its factorization.

8934636121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 186624, while the sum is 43.

The square root of 8934636121 is about 94523.2041405707. The cubic root of 8934636121 is about 2075.0359404236.

The spelling of 8934636121 in words is "eight billion, nine hundred thirty-four million, six hundred thirty-six thousand, one hundred twenty-one".