199399563 has 40 divisors (see below), whose sum is σ = 336196080. Its totient is φ = 116665920.

The previous prime is 199399559. The next prime is 199399597. The reversal of 199399563 is 365993991.

It is a happy number.

199399563 is a `hidden beast` number, since 199 + 399 + 5 + 63 = 666.

199399563 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 199399563 - 2² = 199399559 is a prime.

It is not an unprimeable number, because it can be changed into a prime (199399513) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 21981 + ... + 29697.

It is an arithmetic number, because the mean of its divisors is an integer number (8404902).

Almost surely, 2^199399563 is an apocalyptic number.

199399563 is a deficient number, since it is larger than the sum of its proper divisors (136796517).

199399563 is a wasteful number, since it uses less digits than its factorization.

199399563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7769 (or 7760 counting only the distinct ones).

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

The square root of 199399563 is about 14120.8910129637. The cubic root of 199399563 is about 584.2177315285.

The spelling of 199399563 in words is "one hundred ninety-nine million, three hundred ninety-nine thousand, five hundred sixty-three".