199380879 has 32 divisors (see below), whose sum is σ = 317926080. Its totient is φ = 123033600.

The previous prime is 199380877. The next prime is 199380893. The reversal of 199380879 is 978083991.

199380879 is a `hidden beast` number, since 199 + 380 + 8 + 79 = 666.

It is not a de Polignac number, because 199380879 - 2¹ = 199380877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199380877) 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 31 ways as a sum of consecutive naturals, for example, 24439 + ... + 31559.

It is an arithmetic number, because the mean of its divisors is an integer number (9935190).

Almost surely, 2^199380879 is an apocalyptic number.

199380879 is a deficient number, since it is larger than the sum of its proper divisors (118545201).

199380879 is a wasteful number, since it uses less digits than its factorization.

199380879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7208 (or 7202 counting only the distinct ones).

The product of its (nonzero) digits is 979776, while the sum is 54.

The square root of 199380879 is about 14120.2294244817. The cubic root of 199380879 is about 584.1994836366.

The spelling of 199380879 in words is "one hundred ninety-nine million, three hundred eighty thousand, eight hundred seventy-nine".