8199722 has 4 divisors (see below), whose sum is σ = 12299586. Its totient is φ = 4099860.

The previous prime is 8199703. The next prime is 8199767. The reversal of 8199722 is 2279918.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2279918 = 2 ⋅1139959.

It can be written as a sum of positive squares in only one way, i.e., 7778521 + 421201 = 2789^2 + 649^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 2049929 + ... + 2049932.

Almost surely, 2^8199722 is an apocalyptic number.

8199722 is a deficient number, since it is larger than the sum of its proper divisors (4099864).

8199722 is a wasteful number, since it uses less digits than its factorization.

8199722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4099863.

The product of its digits is 18144, while the sum is 38.

The square root of 8199722 is about 2863.5156713383. The cubic root of 8199722 is about 201.6506886536.

The spelling of 8199722 in words is "eight million, one hundred ninety-nine thousand, seven hundred twenty-two".