199998246 has 128 divisors (see below), whose sum is σ = 498871296. Its totient is φ = 52254720.

The previous prime is 199998241. The next prime is 199998247. The reversal of 199998246 is 642899991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199998241) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2739666 + ... + 2739738.

It is an arithmetic number, because the mean of its divisors is an integer number (3897432).

Almost surely, 2^199998246 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 199998246, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (249435648).

199998246 is an abundant number, since it is smaller than the sum of its proper divisors (298873050).

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

199998246 is a wasteful number, since it uses less digits than its factorization.

199998246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206.

The product of its digits is 2519424, while the sum is 57.

The square root of 199998246 is about 14142.0736103303. The cubic root of 199998246 is about 584.8018380619.

The spelling of 199998246 in words is "one hundred ninety-nine million, nine hundred ninety-eight thousand, two hundred forty-six".