4209808 has 20 divisors (see below), whose sum is σ = 8236080. Its totient is φ = 2084384.

The previous prime is 4209797. The next prime is 4209809. The reversal of 4209808 is 8089024.

It is a self number, because there is not a number n which added to its sum of digits gives 4209808.

It is not an unprimeable number, because it can be changed into a prime (4209809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 483 + ... + 2941.

It is an arithmetic number, because the mean of its divisors is an integer number (411804).

Almost surely, 2^4209808 is an apocalyptic number.

It is an amenable number.

4209808 is a deficient number, since it is larger than the sum of its proper divisors (4026272).

4209808 is a wasteful number, since it uses less digits than its factorization.

4209808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2574 (or 2568 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 4209808 is about 2051.7816647977. The cubic root of 4209808 is about 161.4683583018.

The spelling of 4209808 in words is "four million, two hundred nine thousand, eight hundred eight".