9900843 has 8 divisors (see below), whose sum is σ = 13896000. Its totient is φ = 6253128.

The previous prime is 9900827. The next prime is 9900857. The reversal of 9900843 is 3480099.

9900843 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 9900843 - 2⁴ = 9900827 is a prime.

It is a super-2 number, since 2×9900843² = 196053384221298, which contains 22 as substring.

9900843 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (9900883) 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, 86793 + ... + 86906.

It is an arithmetic number, because the mean of its divisors is an integer number (1737000).

Almost surely, 2^9900843 is an apocalyptic number.

9900843 is a deficient number, since it is larger than the sum of its proper divisors (3995157).

9900843 is a wasteful number, since it uses less digits than its factorization.

9900843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173721.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 9900843 is about 3146.5605031526. The cubic root of 9900843 is about 214.7290113895.

The spelling of 9900843 in words is "nine million, nine hundred thousand, eight hundred forty-three".