199855595 has 4 divisors (see below), whose sum is σ = 239826720. Its totient is φ = 159884472.

The previous prime is 199855577. The next prime is 199855603. The reversal of 199855595 is 595558991.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 595558991 = 11299 ⋅52709.

It is a cyclic number.

It is not a de Polignac number, because 199855595 - 2¹⁸ = 199593451 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 199855595.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19985555 + ... + 19985564.

It is an arithmetic number, because the mean of its divisors is an integer number (59956680).

Almost surely, 2^199855595 is an apocalyptic number.

199855595 is a deficient number, since it is larger than the sum of its proper divisors (39971125).

199855595 is an equidigital number, since it uses as much as digits as its factorization.

199855595 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39971124.

The product of its digits is 3645000, while the sum is 56.

The square root of 199855595 is about 14137.0292140888. The cubic root of 199855595 is about 584.6627661607.

The spelling of 199855595 in words is "one hundred ninety-nine million, eight hundred fifty-five thousand, five hundred ninety-five".