9643213 has 2 divisors, whose sum is σ = 9643214. Its totient is φ = 9643212.

The previous prime is 9643181. The next prime is 9643247. The reversal of 9643213 is 3123469.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7828804 + 1814409 = 2798^2 + 1347^2 .

It is a cyclic number.

It is not a de Polignac number, because 9643213 - 2⁵ = 9643181 is a prime.

9643213 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9643813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4821606 + 4821607.

It is an arithmetic number, because the mean of its divisors is an integer number (4821607).

Almost surely, 2^9643213 is an apocalyptic number.

It is an amenable number.

9643213 is a deficient number, since it is larger than the sum of its proper divisors (1).

9643213 is an equidigital number, since it uses as much as digits as its factorization.

9643213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3888, while the sum is 28.

The square root of 9643213 is about 3105.3523149556. The cubic root of 9643213 is about 212.8501300505.

It can be divided in two parts, 964321 and 3, that added together give a square (964324 = 982²).

The spelling of 9643213 in words is "nine million, six hundred forty-three thousand, two hundred thirteen".