108726109 has 2 divisors, whose sum is σ = 108726110. Its totient is φ = 108726108.

The previous prime is 108726071. The next prime is 108726131. The reversal of 108726109 is 901627801.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 95981209 + 12744900 = 9797^2 + 3570^2 .

It is an emirp because it is prime and its reverse (901627801) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 108726109 - 2²¹ = 106628957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (108726209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54363054 + 54363055.

It is an arithmetic number, because the mean of its divisors is an integer number (54363055).

Almost surely, 2^108726109 is an apocalyptic number.

It is an amenable number.

108726109 is a deficient number, since it is larger than the sum of its proper divisors (1).

108726109 is an equidigital number, since it uses as much as digits as its factorization.

108726109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 34.

The square root of 108726109 is about 10427.1812586144. The cubic root of 108726109 is about 477.2851791752.

The spelling of 108726109 in words is "one hundred eight million, seven hundred twenty-six thousand, one hundred nine".