109411789 has 2 divisors, whose sum is σ = 109411790. Its totient is φ = 109411788.

The previous prime is 109411787. The next prime is 109411811. The reversal of 109411789 is 987114901.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 109369764 + 42025 = 10458^2 + 205^2 .

It is an emirp because it is prime and its reverse (987114901) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 109411789 - 2¹ = 109411787 is a prime.

Together with 109411787, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109411787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54705894 + 54705895.

It is an arithmetic number, because the mean of its divisors is an integer number (54705895).

Almost surely, 2^109411789 is an apocalyptic number.

It is an amenable number.

109411789 is a deficient number, since it is larger than the sum of its proper divisors (1).

109411789 is an equidigital number, since it uses as much as digits as its factorization.

109411789 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 40.

The square root of 109411789 is about 10460.0090344129. The cubic root of 109411789 is about 478.2864085970.

The spelling of 109411789 in words is "one hundred nine million, four hundred eleven thousand, seven hundred eighty-nine".