108109957 has 2 divisors, whose sum is σ = 108109958. Its totient is φ = 108109956.

The previous prime is 108109931. The next prime is 108109979. The reversal of 108109957 is 759901801.

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., 105390756 + 2719201 = 10266^2 + 1649^2 .

It is a cyclic number.

It is not a de Polignac number, because 108109957 - 2¹⁹ = 107585669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (108100957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54054978 + 54054979.

It is an arithmetic number, because the mean of its divisors is an integer number (54054979).

Almost surely, 2^108109957 is an apocalyptic number.

It is an amenable number.

108109957 is a deficient number, since it is larger than the sum of its proper divisors (1).

108109957 is an equidigital number, since it uses as much as digits as its factorization.

108109957 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22680, while the sum is 40.

The square root of 108109957 is about 10397.5938081847. The cubic root of 108109957 is about 476.3818773078.

The spelling of 108109957 in words is "one hundred eight million, one hundred nine thousand, nine hundred fifty-seven".