103863809 has 4 divisors (see below), whose sum is σ = 118701504. Its totient is φ = 89026116.

The previous prime is 103863803. The next prime is 103863827. The reversal of 103863809 is 908368301.

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: 908368301 = 3187 ⋅285023.

It is a cyclic number.

It is not a de Polignac number, because 103863809 - 2²⁰ = 102815233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (103863803) 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, 7418837 + ... + 7418850.

It is an arithmetic number, because the mean of its divisors is an integer number (29675376).

Almost surely, 2^103863809 is an apocalyptic number.

It is an amenable number.

103863809 is a deficient number, since it is larger than the sum of its proper divisors (14837695).

103863809 is an equidigital number, since it uses as much as digits as its factorization.

103863809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14837694.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 103863809 is about 10191.3595265794. The cubic root of 103863809 is about 470.0615718339.

The spelling of 103863809 in words is "one hundred three million, eight hundred sixty-three thousand, eight hundred nine".