3999198 has 16 divisors (see below), whose sum is σ = 9141120. Its totient is φ = 1142616.

The previous prime is 3999161. The next prime is 3999209. The reversal of 3999198 is 8919993.

It is a congruent number.

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 in 7 ways as a sum of consecutive naturals, for example, 47568 + ... + 47651.

It is an arithmetic number, because the mean of its divisors is an integer number (571320).

Almost surely, 2^3999198 is an apocalyptic number.

3999198 is an abundant number, since it is smaller than the sum of its proper divisors (5141922).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3999198 is a wasteful number, since it uses less digits than its factorization.

3999198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95231.

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

The square root of 3999198 is about 1999.7994899489. The cubic root of 3999198 is about 158.7294953573.

The spelling of 3999198 in words is "three million, nine hundred ninety-nine thousand, one hundred ninety-eight".