9923847 has 8 divisors (see below), whose sum is σ = 13321200. Its totient is φ = 6571496.

The previous prime is 9923831. The next prime is 9923861. The reversal of 9923847 is 7483299.

It is an ABA number since it can be written as A⋅B^A, here for A=3, B=149.

It is not a de Polignac number, because 9923847 - 2⁴ = 9923831 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 9923799 and 9923808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9923897) 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 7 ways as a sum of consecutive naturals, for example, 66529 + ... + 66677.

It is an arithmetic number, because the mean of its divisors is an integer number (1665150).

Almost surely, 2^9923847 is an apocalyptic number.

9923847 is a deficient number, since it is larger than the sum of its proper divisors (3397353).

9923847 is an frugal number, since it uses more digits than its factorization.

9923847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450 (or 152 counting only the distinct ones).

The product of its digits is 108864, while the sum is 42.

The square root of 9923847 is about 3150.2138022680. The cubic root of 9923847 is about 214.8951859758.

The spelling of 9923847 in words is "nine million, nine hundred twenty-three thousand, eight hundred forty-seven".