9939147 has 16 divisors (see below), whose sum is σ = 14069760. Its totient is φ = 6223392.

The previous prime is 9939131. The next prime is 9939211. The reversal of 9939147 is 7419399.

It is not a de Polignac number, because 9939147 - 2⁴ = 9939131 is a prime.

9939147 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 9939099 and 9939108.

It is not an unprimeable number, because it can be changed into a prime (9939047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6553 + ... + 7925.

It is an arithmetic number, because the mean of its divisors is an integer number (879360).

Almost surely, 2^9939147 is an apocalyptic number.

9939147 is a deficient number, since it is larger than the sum of its proper divisors (4130613).

9939147 is a wasteful number, since it uses less digits than its factorization.

9939147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1522.

The product of its digits is 61236, while the sum is 42.

The square root of 9939147 is about 3152.6412735990. The cubic root of 9939147 is about 215.0055668290.

The spelling of 9939147 in words is "nine million, nine hundred thirty-nine thousand, one hundred forty-seven".