4103809 has 2 divisors, whose sum is σ = 4103810. Its totient is φ = 4103808.

The previous prime is 4103807. The next prime is 4103831. The reversal of 4103809 is 9083014.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4080400 + 23409 = 2020^2 + 153^2 .

It is a cyclic number.

It is not a de Polignac number, because 4103809 - 2¹ = 4103807 is a prime.

Together with 4103807, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (4103807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2051904 + 2051905.

It is an arithmetic number, because the mean of its divisors is an integer number (2051905).

Almost surely, 2^4103809 is an apocalyptic number.

It is an amenable number.

4103809 is a deficient number, since it is larger than the sum of its proper divisors (1).

4103809 is an equidigital number, since it uses as much as digits as its factorization.

4103809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 4103809 is about 2025.7860202894. The cubic root of 4103809 is about 160.1016151386.

The spelling of 4103809 in words is "four million, one hundred three thousand, eight hundred nine".