4091808 has 48 divisors (see below), whose sum is σ = 12277440. Its totient is φ = 1168896.

The previous prime is 4091797. The next prime is 4091809. The reversal of 4091808 is 8081904.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (4091809) 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 7 ways as a sum of consecutive naturals, for example, 2373 + ... + 3716.

It is an arithmetic number, because the mean of its divisors is an integer number (255780).

Almost surely, 2^4091808 is an apocalyptic number.

4091808 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

4091808 is an abundant number, since it is smaller than the sum of its proper divisors (8185632).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4091808 is a wasteful number, since it uses less digits than its factorization.

4091808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6109 (or 6101 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 30.

The square root of 4091808 is about 2022.8217914587. The cubic root of 4091808 is about 159.9453980352.

The spelling of 4091808 in words is "four million, ninety-one thousand, eight hundred eight".