108494917 has 2 divisors, whose sum is σ = 108494918. Its totient is φ = 108494916.

The previous prime is 108494879. The next prime is 108494987. The reversal of 108494917 is 719494801.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 88190881 + 20304036 = 9391^2 + 4506^2 .

It is an emirp because it is prime and its reverse (719494801) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 108494917 - 2²³ = 100106309 is a prime.

It is a super-2 number, since 2×108494917² = 23542294029673778, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (108494987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54247458 + 54247459.

It is an arithmetic number, because the mean of its divisors is an integer number (54247459).

Almost surely, 2^108494917 is an apocalyptic number.

It is an amenable number.

108494917 is a deficient number, since it is larger than the sum of its proper divisors (1).

108494917 is an equidigital number, since it uses as much as digits as its factorization.

108494917 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 43.

The square root of 108494917 is about 10416.0893333343. The cubic root of 108494917 is about 476.9466440561.

The spelling of 108494917 in words is "one hundred eight million, four hundred ninety-four thousand, nine hundred seventeen".