108513909 has 12 divisors (see below), whose sum is σ = 179134176. Its totient is φ = 62007912.

The previous prime is 108513901. The next prime is 108513913. The reversal of 108513909 is 909315801.

It is a happy number.

It is not a de Polignac number, because 108513909 - 2³ = 108513901 is a prime.

It is a super-3 number, since 3×108513909³ (a number of 25 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108513901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 861159 + ... + 861284.

It is an arithmetic number, because the mean of its divisors is an integer number (14927848).

Almost surely, 2^108513909 is an apocalyptic number.

It is an amenable number.

108513909 is a deficient number, since it is larger than the sum of its proper divisors (70620267).

108513909 is a wasteful number, since it uses less digits than its factorization.

108513909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1722456 (or 1722453 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 36.

The square root of 108513909 is about 10417.0009599692. Note that the first 3 decimals coincide. The cubic root of 108513909 is about 476.9744722174.

The spelling of 108513909 in words is "one hundred eight million, five hundred thirteen thousand, nine hundred nine".