109138853 has 4 divisors (see below), whose sum is σ = 109272288. Its totient is φ = 109005420.

The previous prime is 109138829. The next prime is 109138957. The reversal of 109138853 is 358831901.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 358831901 = 23 ⋅15601387.

It is a cyclic number.

It is not a de Polignac number, because 109138853 - 2²⁰ = 108090277 is a prime.

It is a super-3 number, since 3×109138853³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109138553) 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, 65483 + ... + 67128.

It is an arithmetic number, because the mean of its divisors is an integer number (27318072).

Almost surely, 2^109138853 is an apocalyptic number.

It is an amenable number.

109138853 is a deficient number, since it is larger than the sum of its proper divisors (133435).

109138853 is an equidigital number, since it uses as much as digits as its factorization.

109138853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133434.

The product of its (nonzero) digits is 25920, while the sum is 38.

The square root of 109138853 is about 10446.9542451377. The cubic root of 109138853 is about 477.8883702025. Note that the first 3 decimals are identical.

The spelling of 109138853 in words is "one hundred nine million, one hundred thirty-eight thousand, eight hundred fifty-three".