8857841 has 2 divisors, whose sum is σ = 8857842. Its totient is φ = 8857840.

The previous prime is 8857831. The next prime is 8857853. The reversal of 8857841 is 1487588.

8857841 = 2104² + 2105².

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4431025 + 4426816 = 2105^2 + 2104^2 .

It is a cyclic number.

It is not a de Polignac number, because 8857841 - 2⁶ = 8857777 is a prime.

It is a super-2 number, since 2×8857841² = 156922694362562, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (8857831) 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, 4428920 + 4428921.

It is an arithmetic number, because the mean of its divisors is an integer number (4428921).

Almost surely, 2^8857841 is an apocalyptic number.

8857841 is the 2105-th centered square number.

It is an amenable number.

8857841 is a deficient number, since it is larger than the sum of its proper divisors (1).

8857841 is an equidigital number, since it uses as much as digits as its factorization.

8857841 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 71680, while the sum is 41.

The square root of 8857841 is about 2976.2125260136. The cubic root of 8857841 is about 206.9073698523.

The spelling of 8857841 in words is "eight million, eight hundred fifty-seven thousand, eight hundred forty-one".