109517959 has 2 divisors, whose sum is σ = 109517960. Its totient is φ = 109517958.

The previous prime is 109517953. The next prime is 109517977. The reversal of 109517959 is 959715901.

It is a weak prime.

It is an emirp because it is prime and its reverse (959715901) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 109517959 - 2³ = 109517951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109517951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54758979 + 54758980.

It is an arithmetic number, because the mean of its divisors is an integer number (54758980).

Almost surely, 2^109517959 is an apocalyptic number.

109517959 is a deficient number, since it is larger than the sum of its proper divisors (1).

109517959 is an equidigital number, since it uses as much as digits as its factorization.

109517959 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 127575, while the sum is 46.

The square root of 109517959 is about 10465.0828472593. The cubic root of 109517959 is about 478.4410636309.

The spelling of 109517959 in words is "one hundred nine million, five hundred seventeen thousand, nine hundred fifty-nine".