109849217 has 2 divisors, whose sum is σ = 109849218. Its totient is φ = 109849216.

The previous prime is 109849193. The next prime is 109849237. The reversal of 109849217 is 712948901.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 107412496 + 2436721 = 10364^2 + 1561^2 .

It is a cyclic number.

It is not a de Polignac number, because 109849217 - 2⁶ = 109849153 is a prime.

It is not a weakly prime, because it can be changed into another prime (109849237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54924608 + 54924609.

It is an arithmetic number, because the mean of its divisors is an integer number (54924609).

Almost surely, 2^109849217 is an apocalyptic number.

It is an amenable number.

109849217 is a deficient number, since it is larger than the sum of its proper divisors (1).

109849217 is an equidigital number, since it uses as much as digits as its factorization.

109849217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 41.

The square root of 109849217 is about 10480.8977191842. The cubic root of 109849217 is about 478.9229569126.

The spelling of 109849217 in words is "one hundred nine million, eight hundred forty-nine thousand, two hundred seventeen".