109705559 has 4 divisors (see below), whose sum is σ = 113244480. Its totient is φ = 106166640.

The previous prime is 109705549. The next prime is 109705591. The reversal of 109705559 is 955507901.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 955507901 = 18797 ⋅50833.

It is a cyclic number.

It is not a de Polignac number, because 109705559 - 2⁸ = 109705303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109705549) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1769414 + ... + 1769475.

It is an arithmetic number, because the mean of its divisors is an integer number (28311120).

Almost surely, 2^109705559 is an apocalyptic number.

109705559 is a deficient number, since it is larger than the sum of its proper divisors (3538921).

109705559 is an equidigital number, since it uses as much as digits as its factorization.

109705559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3538920.

The product of its (nonzero) digits is 70875, while the sum is 41.

The square root of 109705559 is about 10474.0421519106. The cubic root of 109705559 is about 478.7140914333.

The spelling of 109705559 in words is "one hundred nine million, seven hundred five thousand, five hundred fifty-nine".