9943668 has 72 divisors (see below), whose sum is σ = 30004800. Its totient is φ = 2839536.

The previous prime is 9943663. The next prime is 9943673. The reversal of 9943668 is 8663499.

It is an interprime number because it is at equal distance from previous prime (9943663) and next prime (9943673).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9943663) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4353 + ... + 6231.

Almost surely, 2^9943668 is an apocalyptic number.

9943668 is a gapful number since it is divisible by the number (98) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9943668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15002400).

9943668 is an abundant number, since it is smaller than the sum of its proper divisors (20061132).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9943668 is a wasteful number, since it uses less digits than its factorization.

9943668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1906 (or 1891 counting only the distinct ones).

The product of its digits is 279936, while the sum is 45.

The square root of 9943668 is about 3153.3582099089. The cubic root of 9943668 is about 215.0381616054.

The spelling of 9943668 in words is "nine million, nine hundred forty-three thousand, six hundred sixty-eight".