199979095 has 8 divisors (see below), whose sum is σ = 240052176. Its totient is φ = 159931776.

The previous prime is 199979093. The next prime is 199979107. The reversal of 199979095 is 590979991.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 199979095 - 2¹ = 199979093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199979093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22344 + ... + 29986.

It is an arithmetic number, because the mean of its divisors is an integer number (30006522).

Almost surely, 2^199979095 is an apocalyptic number.

199979095 is a deficient number, since it is larger than the sum of its proper divisors (40073081).

199979095 is an equidigital number, since it uses as much as digits as its factorization.

199979095 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12881.

The product of its (nonzero) digits is 2066715, while the sum is 58.

The square root of 199979095 is about 14141.3965010532. The cubic root of 199979095 is about 584.7831714023.

It can be divided in two parts, 19997 and 9095, that added together give a palindrome (29092).

The spelling of 199979095 in words is "one hundred ninety-nine million, nine hundred seventy-nine thousand, ninety-five".