103885509 has 16 divisors (see below), whose sum is σ = 170479232. Its totient is φ = 54796608.

The previous prime is 103885477. The next prime is 103885519. The reversal of 103885509 is 905588301.

It is not a de Polignac number, because 103885509 - 2⁵ = 103885477 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103885519) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 189994 + ... + 190539.

It is an arithmetic number, because the mean of its divisors is an integer number (10654952).

Almost surely, 2^103885509 is an apocalyptic number.

It is an amenable number.

103885509 is a deficient number, since it is larger than the sum of its proper divisors (66593723).

103885509 is a wasteful number, since it uses less digits than its factorization.

103885509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380556.

The product of its (nonzero) digits is 43200, while the sum is 39.

The square root of 103885509 is about 10192.4240983193. The cubic root of 103885509 is about 470.0943058084.

The spelling of 103885509 in words is "one hundred three million, eight hundred eighty-five thousand, five hundred nine".