8404005 has 16 divisors (see below), whose sum is σ = 13483584. Its totient is φ = 4469760.

The previous prime is 8403977. The next prime is 8404013. The reversal of 8404005 is 5004048.

8404005 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 8404005 - 2¹³ = 8395813 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8170 + ... + 9140.

It is an arithmetic number, because the mean of its divisors is an integer number (842724).

Almost surely, 2^8404005 is an apocalyptic number.

It is an amenable number.

8404005 is a deficient number, since it is larger than the sum of its proper divisors (5079579).

8404005 is a wasteful number, since it uses less digits than its factorization.

8404005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1556.

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 8404005 is about 2898.9661950426. The cubic root of 8404005 is about 203.3115731140.

The spelling of 8404005 in words is "eight million, four hundred four thousand, five".