109397219 has 2 divisors, whose sum is σ = 109397220. Its totient is φ = 109397218.

The previous prime is 109397209. The next prime is 109397243. The reversal of 109397219 is 912793901.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-109397219 is a prime.

It is a super-2 number, since 2×109397219² = 23935503049867922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (109397209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54698609 + 54698610.

It is an arithmetic number, because the mean of its divisors is an integer number (54698610).

Almost surely, 2^109397219 is an apocalyptic number.

109397219 is a deficient number, since it is larger than the sum of its proper divisors (1).

109397219 is an equidigital number, since it uses as much as digits as its factorization.

109397219 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30618, while the sum is 41.

The square root of 109397219 is about 10459.3125491114. The cubic root of 109397219 is about 478.2651770570.

The spelling of 109397219 in words is "one hundred nine million, three hundred ninety-seven thousand, two hundred nineteen".