9399947 has 4 divisors (see below), whose sum is σ = 9629256. Its totient is φ = 9170640.

The previous prime is 9399937. The next prime is 9399959. The reversal of 9399947 is 7499939.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 9399947 - 2¹⁰ = 9398923 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9399895 and 9399904.

It is not an unprimeable number, because it can be changed into a prime (9399937) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114593 + ... + 114674.

It is an arithmetic number, because the mean of its divisors is an integer number (2407314).

Almost surely, 2^9399947 is an apocalyptic number.

9399947 is a deficient number, since it is larger than the sum of its proper divisors (229309).

9399947 is a wasteful number, since it uses less digits than its factorization.

9399947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229308.

The product of its digits is 551124, while the sum is 50.

The square root of 9399947 is about 3065.9332999920. The cubic root of 9399947 is about 211.0450328026.

The spelling of 9399947 in words is "nine million, three hundred ninety-nine thousand, nine hundred forty-seven".