9861147 has 24 divisors (see below), whose sum is σ = 14798784. Its totient is φ = 6323184.

The previous prime is 9861143. The next prime is 9861151. The reversal of 9861147 is 7411689.

9861147 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (9861143) and next prime (9861151).

It is not a de Polignac number, because 9861147 - 2² = 9861143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9861143) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31968 + ... + 32274.

It is an arithmetic number, because the mean of its divisors is an integer number (616616).

Almost surely, 2^9861147 is an apocalyptic number.

9861147 is a deficient number, since it is larger than the sum of its proper divisors (4937637).

9861147 is a wasteful number, since it uses less digits than its factorization.

9861147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439 (or 436 counting only the distinct ones).

The product of its digits is 12096, while the sum is 36.

The square root of 9861147 is about 3140.2463279176. The cubic root of 9861147 is about 214.4416520189.

The spelling of 9861147 in words is "nine million, eight hundred sixty-one thousand, one hundred forty-seven".