9923806 has 4 divisors (see below), whose sum is σ = 14885712. Its totient is φ = 4961902.

The previous prime is 9923803. The next prime is 9923819. The reversal of 9923806 is 6083299.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9923803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2480950 + ... + 2480953.

It is an arithmetic number, because the mean of its divisors is an integer number (3721428).

Almost surely, 2^9923806 is an apocalyptic number.

9923806 is a deficient number, since it is larger than the sum of its proper divisors (4961906).

9923806 is a wasteful number, since it uses less digits than its factorization.

9923806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4961905.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 9923806 is about 3150.2072947665. The cubic root of 9923806 is about 214.8948900316.

The spelling of 9923806 in words is "nine million, nine hundred twenty-three thousand, eight hundred six".