9906147 has 6 divisors (see below), whose sum is σ = 14308892. Its totient is φ = 6604092.

The previous prime is 9906119. The next prime is 9906157. The reversal of 9906147 is 7416099.

It is not a de Polignac number, because 9906147 - 2⁸ = 9905891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9906107) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 550333 + ... + 550350.

Almost surely, 2^9906147 is an apocalyptic number.

9906147 is a deficient number, since it is larger than the sum of its proper divisors (4402745).

9906147 is a wasteful number, since it uses less digits than its factorization.

9906147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1100689 (or 1100686 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 9906147 is about 3147.4032153507. The cubic root of 9906147 is about 214.7673488441.

The spelling of 9906147 in words is "nine million, nine hundred six thousand, one hundred forty-seven".