9997219 has 2 divisors, whose sum is σ = 9997220.
Its totient is φ = 9997218.
The previous prime is 9997201. The next prime is 9997237. The reversal of 9997219 is 9127999.
9997219 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.
It is a balanced prime because it is at equal distance from previous prime (9997201) and next prime (9997237).
It is a cyclic number.
It is not a de Polignac number, because 9997219 - 213 = 9989027 is a prime.
It is a super-2 number, since 2×99972192 = 199888775467922, which contains 22 as substring.
It is not a weakly prime, because it can be changed into another prime (9997319) 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, 4998609 + 4998610.
It is an arithmetic number, because the mean of its divisors is an integer number (4998610).
Almost surely, 29997219 is an apocalyptic number.
9997219 is a deficient number, since it is larger than the sum of its proper divisors (1).
9997219 is an equidigital number, since it uses as much as digits as its factorization.
9997219 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 91854, while the sum is 46.
The square root of 9997219 is about 3161.8379148843.
The cubic root of 9997219 is about 215.4234955420.
The spelling of 9997219 in words is "nine million, nine hundred ninety-seven thousand, two hundred nineteen".