8887861 has 2 divisors, whose sum is σ = 8887862. Its totient is φ = 8887860.

The previous prime is 8887849. The next prime is 8887871. The reversal of 8887861 is 1687888.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8814961 + 72900 = 2969^2 + 270^2 .

It is a cyclic number.

It is not a de Polignac number, because 8887861 - 2¹⁷ = 8756789 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8887871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4443930 + 4443931.

It is an arithmetic number, because the mean of its divisors is an integer number (4443931).

Almost surely, 2^8887861 is an apocalyptic number.

It is an amenable number.

8887861 is a deficient number, since it is larger than the sum of its proper divisors (1).

8887861 is an equidigital number, since it uses as much as digits as its factorization.

8887861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 172032, while the sum is 46.

The square root of 8887861 is about 2981.2515828088. The cubic root of 8887861 is about 207.1408486980.

The spelling of 8887861 in words is "eight million, eight hundred eighty-seven thousand, eight hundred sixty-one".