103878609 has 32 divisors (see below), whose sum is σ = 148055040. Its totient is φ = 64680000.

The previous prime is 103878581. The next prime is 103878611. The reversal of 103878609 is 906878301.

It is not a de Polignac number, because 103878609 - 2⁸ = 103878353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (103878679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 413734 + ... + 413984.

It is an arithmetic number, because the mean of its divisors is an integer number (4626720).

Almost surely, 2^103878609 is an apocalyptic number.

It is an amenable number.

103878609 is a deficient number, since it is larger than the sum of its proper divisors (44176431).

103878609 is a wasteful number, since it uses less digits than its factorization.

103878609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421.

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 103878609 is about 10192.0856059984. The cubic root of 103878609 is about 470.0838978039.

The spelling of 103878609 in words is "one hundred three million, eight hundred seventy-eight thousand, six hundred nine".