9947806 has 16 divisors (see below), whose sum is σ = 16363008. Its totient is φ = 4498200.

The previous prime is 9947803. The next prime is 9947837. The reversal of 9947806 is 6087499.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9947803) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3571 + ... + 5713.

It is an arithmetic number, because the mean of its divisors is an integer number (1022688).

Almost surely, 2^9947806 is an apocalyptic number.

9947806 is a deficient number, since it is larger than the sum of its proper divisors (6415202).

9947806 is a wasteful number, since it uses less digits than its factorization.

9947806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2367.

The product of its (nonzero) digits is 108864, while the sum is 43.

The square root of 9947806 is about 3154.0142675644. The cubic root of 9947806 is about 215.0679864316.

The spelling of 9947806 in words is "nine million, nine hundred forty-seven thousand, eight hundred six".