9946809 has 6 divisors (see below), whose sum is σ = 14367626. Its totient is φ = 6631200.

The previous prime is 9946799. The next prime is 9946817. The reversal of 9946809 is 9086499.

It can be written as a sum of positive squares in only one way, i.e., 6487209 + 3459600 = 2547^2 + 1860^2 .

It is not a de Polignac number, because 9946809 - 2⁵ = 9946777 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (9946829) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 552592 + ... + 552609.

Almost surely, 2^9946809 is an apocalyptic number.

It is an amenable number.

9946809 is a deficient number, since it is larger than the sum of its proper divisors (4420817).

9946809 is a wasteful number, since it uses less digits than its factorization.

9946809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1105207 (or 1105204 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 45.

The square root of 9946809 is about 3153.8562110534. The cubic root of 9946809 is about 215.0608012644.

The spelling of 9946809 in words is "nine million, nine hundred forty-six thousand, eight hundred nine".