8163998 has 4 divisors (see below), whose sum is σ = 12246000. Its totient is φ = 4081998.

The previous prime is 8163997. The next prime is 8164003. The reversal of 8163998 is 8993618.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8163997) by changing a digit.

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, 2040998 + ... + 2041001.

It is an arithmetic number, because the mean of its divisors is an integer number (3061500).

Almost surely, 2^8163998 is an apocalyptic number.

8163998 is a deficient number, since it is larger than the sum of its proper divisors (4082002).

8163998 is a wasteful number, since it uses less digits than its factorization.

8163998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4082001.

The product of its digits is 93312, while the sum is 44.

The square root of 8163998 is about 2857.2710756944. The cubic root of 8163998 is about 201.3574162626.

The spelling of 8163998 in words is "eight million, one hundred sixty-three thousand, nine hundred ninety-eight".