199439048699 has 32 divisors (see below), whose sum is σ = 235932854976. Its totient is φ = 166569246720.

The previous prime is 199439048689. The next prime is 199439048723. The reversal of 199439048699 is 996840934991.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-199439048699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (199439048659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1248839 + ... + 1399455.

It is an arithmetic number, because the mean of its divisors is an integer number (7372901718).

Almost surely, 2^199439048699 is an apocalyptic number.

199439048699 is a deficient number, since it is larger than the sum of its proper divisors (36493806277).

199439048699 is a wasteful number, since it uses less digits than its factorization.

199439048699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150815.

The product of its (nonzero) digits is 136048896, while the sum is 71.

The spelling of 199439048699 in words is "one hundred ninety-nine billion, four hundred thirty-nine million, forty-eight thousand, six hundred ninety-nine".