109858085 has 4 divisors (see below), whose sum is σ = 131829708. Its totient is φ = 87886464.

The previous prime is 109858031. The next prime is 109858093. The reversal of 109858085 is 580858901.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 580858901 = 7 ⋅82979843.

It can be written as a sum of positive squares in 2 ways, for example, as 38725729 + 71132356 = 6223^2 + 8434^2 .

It is a cyclic number.

It is not a de Polignac number, because 109858085 - 2¹⁶ = 109792549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10985804 + ... + 10985813.

It is an arithmetic number, because the mean of its divisors is an integer number (32957427).

Almost surely, 2^109858085 is an apocalyptic number.

It is an amenable number.

109858085 is a deficient number, since it is larger than the sum of its proper divisors (21971623).

109858085 is an equidigital number, since it uses as much as digits as its factorization.

109858085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21971622.

The product of its (nonzero) digits is 115200, while the sum is 44.

The square root of 109858085 is about 10481.3207660104. The cubic root of 109858085 is about 478.9358441976.

The spelling of 109858085 in words is "one hundred nine million, eight hundred fifty-eight thousand, eighty-five".