4040408 has 8 divisors (see below), whose sum is σ = 7575780. Its totient is φ = 2020200.

The previous prime is 4040401. The next prime is 4040411. The reversal of 4040408 is 8040404.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 4040408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4040401) 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 as a sum of consecutive naturals, namely, 252518 + ... + 252533.

Almost surely, 2^4040408 is an apocalyptic number.

It is an amenable number.

4040408 is a deficient number, since it is larger than the sum of its proper divisors (3535372).

4040408 is a wasteful number, since it uses less digits than its factorization.

4040408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505057 (or 505053 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 4040408 is about 2010.0766154552. The cubic root of 4040408 is about 159.2728461350.

The spelling of 4040408 in words is "four million, forty thousand, four hundred eight".