8940889 has 2 divisors, whose sum is σ = 8940890. Its totient is φ = 8940888.

The previous prime is 8940863. The next prime is 8940913. The reversal of 8940889 is 9880498.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7198489 + 1742400 = 2683^2 + 1320^2 .

It is a cyclic number.

It is not a de Polignac number, because 8940889 - 2¹⁵ = 8908121 is a prime.

It is a super-2 number, since 2×8940889² = 159878992220642, which contains 22 as substring.

It is a Chen prime.

It is equal to p₅₉₈₇₉₈ and since 8940889 and 598798 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (8940809) 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, 4470444 + 4470445.

It is an arithmetic number, because the mean of its divisors is an integer number (4470445).

Almost surely, 2^8940889 is an apocalyptic number.

It is an amenable number.

8940889 is a deficient number, since it is larger than the sum of its proper divisors (1).

8940889 is an equidigital number, since it uses as much as digits as its factorization.

8940889 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 165888, while the sum is 46.

The square root of 8940889 is about 2990.1319368884. The cubic root of 8940889 is about 207.5519896824.

The spelling of 8940889 in words is "eight million, nine hundred forty thousand, eight hundred eighty-nine".