109878269 has 2 divisors, whose sum is σ = 109878270. Its totient is φ = 109878268.

The previous prime is 109878253. The next prime is 109878281. The reversal of 109878269 is 962878901.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 87647044 + 22231225 = 9362^2 + 4715^2 .

It is an emirp because it is prime and its reverse (962878901) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 109878269 - 2⁴ = 109878253 is a prime.

It is a super-2 number, since 2×109878269² = 24146467996872722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109878239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54939134 + 54939135.

It is an arithmetic number, because the mean of its divisors is an integer number (54939135).

Almost surely, 2^109878269 is an apocalyptic number.

It is an amenable number.

109878269 is a deficient number, since it is larger than the sum of its proper divisors (1).

109878269 is an equidigital number, since it uses as much as digits as its factorization.

109878269 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 435456, while the sum is 50.

The square root of 109878269 is about 10482.2835775417. The cubic root of 109878269 is about 478.9651737006.

The spelling of 109878269 in words is "one hundred nine million, eight hundred seventy-eight thousand, two hundred sixty-nine".