199395963 has 24 divisors (see below), whose sum is σ = 313923792. Its totient is φ = 121220928.

The previous prime is 199395943. The next prime is 199395979. The reversal of 199395963 is 369593991.

It is a happy number.

199395963 is a `hidden beast` number, since 19 + 9 + 39 + 596 + 3 = 666.

It is not a de Polignac number, because 199395963 - 2⁹ = 199395451 is a prime.

It is not an unprimeable number, because it can be changed into a prime (199395943) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 556 + ... + 19977.

It is an arithmetic number, because the mean of its divisors is an integer number (13080158).

Almost surely, 2^199395963 is an apocalyptic number.

199395963 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

199395963 is a deficient number, since it is larger than the sum of its proper divisors (114527829).

199395963 is a wasteful number, since it uses less digits than its factorization.

199395963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20635 (or 20632 counting only the distinct ones).

The product of its digits is 1771470, while the sum is 54.

The square root of 199395963 is about 14120.7635416786. The cubic root of 199395963 is about 584.2142156457.

The spelling of 199395963 in words is "one hundred ninety-nine million, three hundred ninety-five thousand, nine hundred sixty-three".