8404447 has 4 divisors (see below), whose sum is σ = 8422056. Its totient is φ = 8386840.

The previous prime is 8404433. The next prime is 8404463. The reversal of 8404447 is 7444048.

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 8404447 - 2¹¹ = 8402399 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8404427) 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 in 3 ways as a sum of consecutive naturals, for example, 8068 + ... + 9049.

It is an arithmetic number, because the mean of its divisors is an integer number (2105514).

Almost surely, 2^8404447 is an apocalyptic number.

8404447 is a deficient number, since it is larger than the sum of its proper divisors (17609).

8404447 is a wasteful number, since it uses less digits than its factorization.

8404447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17608.

The product of its (nonzero) digits is 14336, while the sum is 31.

The square root of 8404447 is about 2899.0424281131. The cubic root of 8404447 is about 203.3151373726.

The spelling of 8404447 in words is "eight million, four hundred four thousand, four hundred forty-seven".