8289881 has 2 divisors, whose sum is σ = 8289882. Its totient is φ = 8289880.

The previous prime is 8289877. The next prime is 8289899. The reversal of 8289881 is 1889828.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5331481 + 2958400 = 2309^2 + 1720^2 .

It is a cyclic number.

It is not a de Polignac number, because 8289881 - 2² = 8289877 is a prime.

It is a super-2 number, since 2×8289881² = 137444253988322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (8289581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4144940 + 4144941.

It is an arithmetic number, because the mean of its divisors is an integer number (4144941).

Almost surely, 2^8289881 is an apocalyptic number.

It is an amenable number.

8289881 is a deficient number, since it is larger than the sum of its proper divisors (1).

8289881 is an equidigital number, since it uses as much as digits as its factorization.

8289881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 73728, while the sum is 44.

The square root of 8289881 is about 2879.2153444993. The cubic root of 8289881 is about 202.3870711093.

The spelling of 8289881 in words is "eight million, two hundred eighty-nine thousand, eight hundred eighty-one".