8549961 has 20 divisors (see below), whose sum is σ = 13310352. Its totient is φ = 4881576.

The previous prime is 8549941. The next prime is 8549969. The reversal of 8549961 is 1699458.

It is not a de Polignac number, because 8549961 - 2¹⁵ = 8517193 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8549969) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 6610 + ... + 7796.

Almost surely, 2^8549961 is an apocalyptic number.

It is an amenable number.

8549961 is a deficient number, since it is larger than the sum of its proper divisors (4760391).

8549961 is an equidigital number, since it uses as much as digits as its factorization.

8549961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1218 (or 1197 counting only the distinct ones).

The product of its digits is 77760, while the sum is 42.

The square root of 8549961 is about 2924.0316345758. The cubic root of 8549961 is about 204.4818243740.

The spelling of 8549961 in words is "eight million, five hundred forty-nine thousand, nine hundred sixty-one".