9861055 has 16 divisors (see below), whose sum is σ = 12268224. Its totient is φ = 7603200.

The previous prime is 9861053. The next prime is 9861079. The reversal of 9861055 is 5501689.

It is not a de Polignac number, because 9861055 - 2¹ = 9861053 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9861055.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9861053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27759 + ... + 28111.

It is an arithmetic number, because the mean of its divisors is an integer number (766764).

Almost surely, 2^9861055 is an apocalyptic number.

9861055 is a deficient number, since it is larger than the sum of its proper divisors (2407169).

9861055 is a wasteful number, since it uses less digits than its factorization.

9861055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 546.

The product of its (nonzero) digits is 10800, while the sum is 34.

The square root of 9861055 is about 3140.2316793511. The cubic root of 9861055 is about 214.4409851359.

The spelling of 9861055 in words is "nine million, eight hundred sixty-one thousand, fifty-five".