8549789 has 2 divisors, whose sum is σ = 8549790. Its totient is φ = 8549788.

The previous prime is 8549777. The next prime is 8549797. The reversal of 8549789 is 9879458.

8549789 is digitally balanced in base 2 and base 3, because in such bases 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., 6461764 + 2088025 = 2542^2 + 1445^2 .

It is a cyclic number.

It is not a de Polignac number, because 8549789 - 2⁴ = 8549773 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 (8549719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4274894 + 4274895.

It is an arithmetic number, because the mean of its divisors is an integer number (4274895).

Almost surely, 2^8549789 is an apocalyptic number.

It is an amenable number.

8549789 is a deficient number, since it is larger than the sum of its proper divisors (1).

8549789 is an equidigital number, since it uses as much as digits as its factorization.

8549789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 725760, while the sum is 50.

The square root of 8549789 is about 2924.0022229814. The cubic root of 8549789 is about 204.4804531744.

The spelling of 8549789 in words is "eight million, five hundred forty-nine thousand, seven hundred eighty-nine".