9843997 has 4 divisors (see below), whose sum is σ = 10005436. Its totient is φ = 9682560.

The previous prime is 9843991. The next prime is 9844001. The reversal of 9843997 is 7993489.

9843997 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5225796 + 4618201 = 2286^2 + 2149^2 .

It is a cyclic number.

It is not a de Polignac number, because 9843997 - 2³ = 9843989 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9843997.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9843991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80628 + ... + 80749.

It is an arithmetic number, because the mean of its divisors is an integer number (2501359).

Almost surely, 2^9843997 is an apocalyptic number.

It is an amenable number.

9843997 is a deficient number, since it is larger than the sum of its proper divisors (161439).

9843997 is a wasteful number, since it uses less digits than its factorization.

9843997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161438.

The product of its digits is 489888, while the sum is 49.

The square root of 9843997 is about 3137.5144621181. The cubic root of 9843997 is about 214.3172645820.

The spelling of 9843997 in words is "nine million, eight hundred forty-three thousand, nine hundred ninety-seven".