8400404 has 12 divisors (see below), whose sum is σ = 15013824. Its totient is φ = 4110744.

The previous prime is 8400377. The next prime is 8400409. The reversal of 8400404 is 4040048.

8400404 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8400409) 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, 22154 + ... + 22529.

It is an arithmetic number, because the mean of its divisors is an integer number (1251152).

Almost surely, 2^8400404 is an apocalyptic number.

It is an amenable number.

8400404 is a deficient number, since it is larger than the sum of its proper divisors (6613420).

8400404 is a wasteful number, since it uses less digits than its factorization.

8400404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44734 (or 44732 counting only the distinct ones).

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

The square root of 8400404 is about 2898.3450450214. The cubic root of 8400404 is about 203.2825302324.

The spelling of 8400404 in words is "eight million, four hundred thousand, four hundred four".