8549641 has 2 divisors, whose sum is σ = 8549642. Its totient is φ = 8549640.

The previous prime is 8549609. The next prime is 8549663. The reversal of 8549641 is 1469458.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5659641 + 2890000 = 2379^2 + 1700^2 .

It is a cyclic number.

It is not a de Polignac number, because 8549641 - 2⁵ = 8549609 is a prime.

It is a super-2 number, since 2×8549641² = 146192722457762, which contains 22 as substring.

8549641 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 8549641.

It is not a weakly prime, because it can be changed into another prime (8549941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4274820 + 4274821.

It is an arithmetic number, because the mean of its divisors is an integer number (4274821).

Almost surely, 2^8549641 is an apocalyptic number.

It is an amenable number.

8549641 is a deficient number, since it is larger than the sum of its proper divisors (1).

8549641 is an equidigital number, since it uses as much as digits as its factorization.

8549641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34560, while the sum is 37.

The square root of 8549641 is about 2923.9769150936. The cubic root of 8549641 is about 204.4792732903.

The spelling of 8549641 in words is "eight million, five hundred forty-nine thousand, six hundred forty-one".