109135885 has 4 divisors (see below), whose sum is σ = 130963068. Its totient is φ = 87308704.

The previous prime is 109135883. The next prime is 109135889. The reversal of 109135885 is 588531901.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 588531901 = 1699 ⋅346399.

It can be written as a sum of positive squares in 2 ways, for example, as 43639236 + 65496649 = 6606^2 + 8093^2 .

It is a cyclic number.

It is not a de Polignac number, because 109135885 - 2¹ = 109135883 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109135883) 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, 10913584 + ... + 10913593.

It is an arithmetic number, because the mean of its divisors is an integer number (32740767).

Almost surely, 2^109135885 is an apocalyptic number.

It is an amenable number.

109135885 is a deficient number, since it is larger than the sum of its proper divisors (21827183).

109135885 is an equidigital number, since it uses as much as digits as its factorization.

109135885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21827182.

The product of its (nonzero) digits is 43200, while the sum is 40.

The square root of 109135885 is about 10446.8121932004. The cubic root of 109135885 is about 477.8840381505.

The spelling of 109135885 in words is "one hundred nine million, one hundred thirty-five thousand, eight hundred eighty-five".