109198669 has 2 divisors, whose sum is σ = 109198670. Its totient is φ = 109198668.

The previous prime is 109198651. The next prime is 109198721. The reversal of 109198669 is 966891901.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 89529444 + 19669225 = 9462^2 + 4435^2 .

It is an emirp because it is prime and its reverse (966891901) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 109198669 - 2⁷ = 109198541 is a prime.

It is a super-2 number, since 2×109198669² = 23848698622743122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109198169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54599334 + 54599335.

It is an arithmetic number, because the mean of its divisors is an integer number (54599335).

Almost surely, 2^109198669 is an apocalyptic number.

It is an amenable number.

109198669 is a deficient number, since it is larger than the sum of its proper divisors (1).

109198669 is an equidigital number, since it uses as much as digits as its factorization.

109198669 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 209952, while the sum is 49.

The square root of 109198669 is about 10449.8166969569. The cubic root of 109198669 is about 477.9756600761.

The spelling of 109198669 in words is "one hundred nine million, one hundred ninety-eight thousand, six hundred sixty-nine".