4090404 has 24 divisors (see below), whose sum is σ = 10106208. Its totient is φ = 1283200.

The previous prime is 4090403. The next prime is 4090423. The reversal of 4090404 is 4040904.

It is a happy number.

4090404 is digitally balanced in base 2 and base 5, because in such bases it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (21) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (4090403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9822 + ... + 10229.

It is an arithmetic number, because the mean of its divisors is an integer number (421092).

Almost surely, 2^4090404 is an apocalyptic number.

It is an amenable number.

4090404 is an abundant number, since it is smaller than the sum of its proper divisors (6015804).

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

4090404 is a wasteful number, since it uses less digits than its factorization.

4090404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20075 (or 20073 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 4090404 is about 2022.4747217209. The cubic root of 4090404 is about 159.9271022087.

The spelling of 4090404 in words is "four million, ninety thousand, four hundred four".