9863213 has 8 divisors (see below), whose sum is σ = 10471032. Its totient is φ = 9258496.

The previous prime is 9863171. The next prime is 9863221. The reversal of 9863213 is 3123689.

It can be written as a sum of positive squares in 4 ways, for example, as 8219689 + 1643524 = 2867^2 + 1282^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 9863213 - 2⁶ = 9863149 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 9863213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9863263) 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, 11081 + ... + 11937.

It is an arithmetic number, because the mean of its divisors is an integer number (1308879).

Almost surely, 2^9863213 is an apocalyptic number.

It is an amenable number.

9863213 is a deficient number, since it is larger than the sum of its proper divisors (607819).

9863213 is a wasteful number, since it uses less digits than its factorization.

9863213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1551.

The product of its digits is 7776, while the sum is 32.

The square root of 9863213 is about 3140.5752657754. The cubic root of 9863213 is about 214.4566267988.

The spelling of 9863213 in words is "nine million, eight hundred sixty-three thousand, two hundred thirteen".