4009808 has 20 divisors (see below), whose sum is σ = 8475648. Its totient is φ = 1822560.

The previous prime is 4009799. The next prime is 4009823. The reversal of 4009808 is 8089004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11216 + ... + 11567.

Almost surely, 2^4009808 is an apocalyptic number.

It is an amenable number.

4009808 is an abundant number, since it is smaller than the sum of its proper divisors (4465840).

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

4009808 is a wasteful number, since it uses less digits than its factorization.

4009808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22802 (or 22796 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 4009808 is about 2002.4504987640. The cubic root of 4009808 is about 158.8697428766.

The spelling of 4009808 in words is "four million, nine thousand, eight hundred eight".