8194649 has 4 divisors (see below), whose sum is σ = 8416164. Its totient is φ = 7973136.

The previous prime is 8194631. The next prime is 8194651. The reversal of 8194649 is 9464918.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9464918 = 2 ⋅4732459.

It can be written as a sum of positive squares in 2 ways, for example, as 3087049 + 5107600 = 1757^2 + 2260^2 .

It is a cyclic number.

It is not a de Polignac number, because 8194649 - 2⁸ = 8194393 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8194349) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110702 + ... + 110775.

It is an arithmetic number, because the mean of its divisors is an integer number (2104041).

Almost surely, 2^8194649 is an apocalyptic number.

It is an amenable number.

8194649 is a deficient number, since it is larger than the sum of its proper divisors (221515).

8194649 is a wasteful number, since it uses less digits than its factorization.

8194649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221514.

The product of its digits is 62208, while the sum is 41.

The square root of 8194649 is about 2862.6297350513. The cubic root of 8194649 is about 201.6090943580.

The spelling of 8194649 in words is "eight million, one hundred ninety-four thousand, six hundred forty-nine".