8199349894 has 4 divisors (see below), whose sum is σ = 12299024844. Its totient is φ = 4099674946.

The previous prime is 8199349843. The next prime is 8199349897. The reversal of 8199349894 is 4989439918.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4989439918 = 2 ⋅2494719959.

It is a super-4 number, since 4×8199349894⁴ (a number of 41 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8199349897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2049837472 + ... + 2049837475.

It is an arithmetic number, because the mean of its divisors is an integer number (3074756211).

Almost surely, 2^8199349894 is an apocalyptic number.

8199349894 is a deficient number, since it is larger than the sum of its proper divisors (4099674950).

8199349894 is a wasteful number, since it uses less digits than its factorization.

8199349894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4099674949.

The product of its digits is 20155392, while the sum is 64.

The square root of 8199349894 is about 90550.2617003397. The cubic root of 8199349894 is about 2016.4763828324.

The spelling of 8199349894 in words is "eight billion, one hundred ninety-nine million, three hundred forty-nine thousand, eight hundred ninety-four".