9443813 has 4 divisors (see below), whose sum is σ = 9450540. Its totient is φ = 9437088.

The previous prime is 9443807. The next prime is 9443831. The reversal of 9443813 is 3183449.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 3183449 = 281 ⋅11329.

It can be written as a sum of positive squares in 2 ways, for example, as 214369 + 9229444 = 463^2 + 3038^2 .

It is a cyclic number.

It is not a de Polignac number, because 9443813 - 2⁸ = 9443557 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 9443813.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9443873) 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, 368 + ... + 4361.

It is an arithmetic number, because the mean of its divisors is an integer number (2362635).

Almost surely, 2^9443813 is an apocalyptic number.

It is an amenable number.

9443813 is a deficient number, since it is larger than the sum of its proper divisors (6727).

9443813 is a wasteful number, since it uses less digits than its factorization.

9443813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6726.

The product of its digits is 10368, while the sum is 32.

The square root of 9443813 is about 3073.0787493977. The cubic root of 9443813 is about 211.3728125903.

The spelling of 9443813 in words is "nine million, four hundred forty-three thousand, eight hundred thirteen".