8859421 has 2 divisors, whose sum is σ = 8859422. Its totient is φ = 8859420.

The previous prime is 8859373. The next prime is 8859437. The reversal of 8859421 is 1249588.

8859421 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8236900 + 622521 = 2870^2 + 789^2 .

It is a cyclic number.

It is not a de Polignac number, because 8859421 - 2¹³ = 8851229 is a prime.

It is a super-3 number, since 3×8859421³ (a number of 22 digits) contains 333 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8859481) by changing a digit.

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

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4429710 + 4429711.

It is an arithmetic number, because the mean of its divisors is an integer number (4429711).

Almost surely, 2^8859421 is an apocalyptic number.

It is an amenable number.

8859421 is a deficient number, since it is larger than the sum of its proper divisors (1).

8859421 is an equidigital number, since it uses as much as digits as its factorization.

8859421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23040, while the sum is 37.

The square root of 8859421 is about 2976.4779522113. The cubic root of 8859421 is about 206.9196713529.

The spelling of 8859421 in words is "eight million, eight hundred fifty-nine thousand, four hundred twenty-one".