199438854 has 32 divisors (see below), whose sum is σ = 406581120. Its totient is φ = 65208000.

The previous prime is 199438807. The next prime is 199438861. The reversal of 199438854 is 458834991.

199438854 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 199438797 and 199438806.

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 15 ways as a sum of consecutive naturals, for example, 68529 + ... + 71379.

It is an arithmetic number, because the mean of its divisors is an integer number (12705660).

Almost surely, 2^199438854 is an apocalyptic number.

199438854 is an abundant number, since it is smaller than the sum of its proper divisors (207142266).

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

199438854 is a wasteful number, since it uses less digits than its factorization.

199438854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3076.

The product of its digits is 1244160, while the sum is 51.

The square root of 199438854 is about 14122.2821810074. The cubic root of 199438854 is about 584.2561017085.

The spelling of 199438854 in words is "one hundred ninety-nine million, four hundred thirty-eight thousand, eight hundred fifty-four".