9999801 has 32 divisors (see below), whose sum is σ = 17089280. Its totient is φ = 5660928.

The previous prime is 9999761. The next prime is 9999823. The reversal of 9999801 is 1089999.

9999801 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9999801 - 2⁹ = 9999289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9999401) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29505 + ... + 29841.

It is an arithmetic number, because the mean of its divisors is an integer number (534040).

Almost surely, 2^9999801 is an apocalyptic number.

It is an amenable number.

9999801 is a deficient number, since it is larger than the sum of its proper divisors (7089479).

9999801 is a wasteful number, since it uses less digits than its factorization.

9999801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510 (or 504 counting only the distinct ones).

The product of its (nonzero) digits is 52488, while the sum is 45.

The square root of 9999801 is about 3162.2461953491. The cubic root of 9999801 is about 215.4420398854.

The spelling of 9999801 in words is "nine million, nine hundred ninety-nine thousand, eight hundred one".