8194644 has 18 divisors (see below), whose sum is σ = 20714330. Its totient is φ = 2731536.

The previous prime is 8194631. The next prime is 8194651. The reversal of 8194644 is 4464918.

It is a happy number.

8194644 is a `hidden beast` number, since 8 + 1 + 9 + 4 + 644 = 666.

It can be written as a sum of positive squares in only one way, i.e., 8191044 + 3600 = 2862^2 + 60^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 227629 = 8194644 / (8 + 1 + 9 + 4 + 6 + 4 + 4).

It is a plaindrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 8194599 and 8194608.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 113779 + ... + 113850.

Almost surely, 2^8194644 is an apocalyptic number.

It is an amenable number.

8194644 is an abundant number, since it is smaller than the sum of its proper divisors (12519686).

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

8194644 is a wasteful number, since it uses less digits than its factorization.

8194644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227639 (or 227634 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 8194644 is about 2862.6288617283. The cubic root of 8194644 is about 201.6090533538.

The spelling of 8194644 in words is "eight million, one hundred ninety-four thousand, six hundred forty-four".