8404087 has 4 divisors (see below), whose sum is σ = 8420680. Its totient is φ = 8387496.

The previous prime is 8404021. The next prime is 8404111. The reversal of 8404087 is 7804048.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 8404087 - 2⁷ = 8403959 is a prime.

It is a Duffinian number.

8404087 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8404387) 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 3 ways as a sum of consecutive naturals, for example, 7512 + ... + 8557.

It is an arithmetic number, because the mean of its divisors is an integer number (2105170).

Almost surely, 2^8404087 is an apocalyptic number.

8404087 is a deficient number, since it is larger than the sum of its proper divisors (16593).

8404087 is a wasteful number, since it uses less digits than its factorization.

8404087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16592.

The product of its (nonzero) digits is 7168, while the sum is 31.

The square root of 8404087 is about 2898.9803379809. The cubic root of 8404087 is about 203.3122343660.

The spelling of 8404087 in words is "eight million, four hundred four thousand, eighty-seven".