9947147 has 12 divisors (see below), whose sum is σ = 11842776. Its totient is φ = 8326080.

The previous prime is 9947141. The next prime is 9947153. The reversal of 9947147 is 7417499.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (9947141) and next prime (9947153).

It is not a de Polignac number, because 9947147 - 2⁴ = 9947131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9947141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 254 + ... + 4467.

It is an arithmetic number, because the mean of its divisors is an integer number (986898).

Almost surely, 2^9947147 is an apocalyptic number.

9947147 is a deficient number, since it is larger than the sum of its proper divisors (1895629).

9947147 is a wasteful number, since it uses less digits than its factorization.

9947147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4778 (or 4771 counting only the distinct ones).

The product of its digits is 63504, while the sum is 41.

The square root of 9947147 is about 3153.9097957932. The cubic root of 9947147 is about 215.0632372124.

The spelling of 9947147 in words is "nine million, nine hundred forty-seven thousand, one hundred forty-seven".