9391668 has 72 divisors (see below), whose sum is σ = 25947936. Its totient is φ = 2620800.

The previous prime is 9391663. The next prime is 9391691. The reversal of 9391668 is 8661939.

9391668 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9391663) 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, 22098 + ... + 22518.

It is an arithmetic number, because the mean of its divisors is an integer number (360388).

Almost surely, 2^9391668 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9391668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12973968).

9391668 is an abundant number, since it is smaller than the sum of its proper divisors (16556268).

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

9391668 is a wasteful number, since it uses less digits than its factorization.

9391668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 465 (or 450 counting only the distinct ones).

The product of its digits is 69984, while the sum is 42.

The square root of 9391668 is about 3064.5828427373. The cubic root of 9391668 is about 210.9830553241.

The spelling of 9391668 in words is "nine million, three hundred ninety-one thousand, six hundred sixty-eight".