199998596 has 18 divisors (see below), whose sum is σ = 407140398. Its totient is φ = 85713600.

The previous prime is 199998581. The next prime is 199998607. The reversal of 199998596 is 695899991.

It can be written as a sum of positive squares in only one way, i.e., 190164100 + 9834496 = 13790^2 + 3136^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 510005 + ... + 510396.

It is an arithmetic number, because the mean of its divisors is an integer number (22618911).

Almost surely, 2^199998596 is an apocalyptic number.

It is an amenable number.

199998596 is an abundant number, since it is smaller than the sum of its proper divisors (207141802).

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

199998596 is a wasteful number, since it uses less digits than its factorization.

199998596 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1020419 (or 1020410 counting only the distinct ones).

The product of its digits is 14171760, while the sum is 65.

The square root of 199998596 is about 14142.0859847478. The cubic root of 199998596 is about 584.8021791991.

The spelling of 199998596 in words is "one hundred ninety-nine million, nine hundred ninety-eight thousand, five hundred ninety-six".