199355905 has 16 divisors (see below), whose sum is σ = 279221760. Its totient is φ = 133791552.

The previous prime is 199355857. The next prime is 199355939. The reversal of 199355905 is 509553991.

199355905 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 199355905 - 2⁷ = 199355777 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58950 + ... + 62239.

It is an arithmetic number, because the mean of its divisors is an integer number (17451360).

Almost surely, 2^199355905 is an apocalyptic number.

It is an amenable number.

199355905 is a deficient number, since it is larger than the sum of its proper divisors (79865855).

199355905 is a wasteful number, since it uses less digits than its factorization.

199355905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121248.

The product of its (nonzero) digits is 273375, while the sum is 46.

The square root of 199355905 is about 14119.3450627145. The cubic root of 199355905 is about 584.1750907807.

The spelling of 199355905 in words is "one hundred ninety-nine million, three hundred fifty-five thousand, nine hundred five".