8199939 has 8 divisors (see below), whose sum is σ = 11927232. Its totient is φ = 4969640.

The previous prime is 8199931. The next prime is 8199941. The reversal of 8199939 is 9399918.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8199939 - 2³ = 8199931 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8199931) 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 in 7 ways as a sum of consecutive naturals, for example, 124209 + ... + 124274.

It is an arithmetic number, because the mean of its divisors is an integer number (1490904).

Almost surely, 2^8199939 is an apocalyptic number.

8199939 is a deficient number, since it is larger than the sum of its proper divisors (3727293).

8199939 is a wasteful number, since it uses less digits than its factorization.

8199939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248497.

The product of its digits is 157464, while the sum is 48.

The square root of 8199939 is about 2863.5535615735. The cubic root of 8199939 is about 201.6524674868.

The spelling of 8199939 in words is "eight million, one hundred ninety-nine thousand, nine hundred thirty-nine".