8404644 has 12 divisors (see below), whose sum is σ = 19610864. Its totient is φ = 2801544.

The previous prime is 8404639. The next prime is 8404673. The reversal of 8404644 is 4464048.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 350182 + ... + 350205.

Almost surely, 2^8404644 is an apocalyptic number.

It is an amenable number.

8404644 is an abundant number, since it is smaller than the sum of its proper divisors (11206220).

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

8404644 is a wasteful number, since it uses less digits than its factorization.

8404644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 700394 (or 700392 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 30.

The square root of 8404644 is about 2899.0764046503. The cubic root of 8404644 is about 203.3167259272.

The spelling of 8404644 in words is "eight million, four hundred four thousand, six hundred forty-four".