199998853 has 2 divisors, whose sum is σ = 199998854. Its totient is φ = 199998852.

The previous prime is 199998811. The next prime is 199998889. The reversal of 199998853 is 358899991.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 197739844 + 2259009 = 14062^2 + 1503^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-199998853 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 199998791 and 199998800.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199998893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99999426 + 99999427.

It is an arithmetic number, because the mean of its divisors is an integer number (99999427).

Almost surely, 2^199998853 is an apocalyptic number.

It is an amenable number.

199998853 is a deficient number, since it is larger than the sum of its proper divisors (1).

199998853 is an equidigital number, since it uses as much as digits as its factorization.

199998853 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6298560, while the sum is 61.

The square root of 199998853 is about 14142.0950710989. The cubic root of 199998853 is about 584.8024296910.

The spelling of 199998853 in words is "one hundred ninety-nine million, nine hundred ninety-eight thousand, eight hundred fifty-three".