8540849 has 2 divisors, whose sum is σ = 8540850. Its totient is φ = 8540848.

The previous prime is 8540839. The next prime is 8540867. The reversal of 8540849 is 9480458.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4276624 + 4264225 = 2068^2 + 2065^2 .

It is a cyclic number.

It is not a de Polignac number, because 8540849 - 2¹² = 8536753 is a prime.

It is a super-2 number, since 2×8540849² = 145892203281602, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (8540809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4270424 + 4270425.

It is an arithmetic number, because the mean of its divisors is an integer number (4270425).

Almost surely, 2^8540849 is an apocalyptic number.

It is an amenable number.

8540849 is a deficient number, since it is larger than the sum of its proper divisors (1).

8540849 is an equidigital number, since it uses as much as digits as its factorization.

8540849 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46080, while the sum is 38.

The square root of 8540849 is about 2922.4730965400. The cubic root of 8540849 is about 204.4091573493.

The spelling of 8540849 in words is "eight million, five hundred forty thousand, eight hundred forty-nine".