199985095 has 4 divisors (see below), whose sum is σ = 239982120. Its totient is φ = 159988072.

The previous prime is 199985083. The next prime is 199985101. The reversal of 199985095 is 590589991.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 199985095 - 2²⁷ = 65767367 is a prime.

It is a congruent number.

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, 19998505 + ... + 19998514.

It is an arithmetic number, because the mean of its divisors is an integer number (59995530).

Almost surely, 2^199985095 is an apocalyptic number.

199985095 is a deficient number, since it is larger than the sum of its proper divisors (39997025).

199985095 is an equidigital number, since it uses as much as digits as its factorization.

199985095 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39997024.

The product of its (nonzero) digits is 1312200, while the sum is 55.

The square root of 199985095 is about 14141.6086425838. The cubic root of 199985095 is about 584.7890197869.

The spelling of 199985095 in words is "one hundred ninety-nine million, nine hundred eighty-five thousand, ninety-five".