199997848 has 8 divisors (see below), whose sum is σ = 374995980. Its totient is φ = 99998920.

The previous prime is 199997797. The next prime is 199997851. The reversal of 199997848 is 848799991.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×199997848² = 79998278409262208, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 199997848.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12499858 + ... + 12499873.

Almost surely, 2^199997848 is an apocalyptic number.

It is an amenable number.

199997848 is a deficient number, since it is larger than the sum of its proper divisors (174998132).

199997848 is a wasteful number, since it uses less digits than its factorization.

199997848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24999737 (or 24999733 counting only the distinct ones).

The product of its digits is 11757312, while the sum is 64.

The square root of 199997848 is about 14142.0595388366. The cubic root of 199997848 is about 584.8014501397.

The spelling of 199997848 in words is "one hundred ninety-nine million, nine hundred ninety-seven thousand, eight hundred forty-eight".