9998806 has 8 divisors (see below), whose sum is σ = 15403680. Its totient is φ = 4864248.

The previous prime is 9998801. The next prime is 9998809. The reversal of 9998806 is 6088999.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×9998806³ (a number of 22 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 9998806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9998801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67486 + ... + 67633.

It is an arithmetic number, because the mean of its divisors is an integer number (1925460).

Almost surely, 2^9998806 is an apocalyptic number.

9998806 is a deficient number, since it is larger than the sum of its proper divisors (5404874).

9998806 is a wasteful number, since it uses less digits than its factorization.

9998806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135158.

The product of its (nonzero) digits is 279936, while the sum is 49.

The square root of 9998806 is about 3162.0888665564. The cubic root of 9998806 is about 215.4348940118.

The spelling of 9998806 in words is "nine million, nine hundred ninety-eight thousand, eight hundred six".