9913219 has 2 divisors, whose sum is σ = 9913220. Its totient is φ = 9913218.

The previous prime is 9913217. The next prime is 9913283. The reversal of 9913219 is 9123199.

It is a weak prime.

It is an emirp because it is prime and its reverse (9123199) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9913219 - 2¹ = 9913217 is a prime.

It is a super-2 number, since 2×9913219² = 196543821883922, which contains 22 as substring.

Together with 9913217, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (9913213) 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, 4956609 + 4956610.

It is an arithmetic number, because the mean of its divisors is an integer number (4956610).

Almost surely, 2^9913219 is an apocalyptic number.

9913219 is a deficient number, since it is larger than the sum of its proper divisors (1).

9913219 is an equidigital number, since it uses as much as digits as its factorization.

9913219 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4374, while the sum is 34.

The square root of 9913219 is about 3148.5264807525. The cubic root of 9913219 is about 214.8184441692.

The spelling of 9913219 in words is "nine million, nine hundred thirteen thousand, two hundred nineteen".