199794439 has 8 divisors (see below), whose sum is σ = 215371520. Its totient is φ = 184247136.

The previous prime is 199794437. The next prime is 199794449. The reversal of 199794439 is 934497991.

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 199794439 - 2¹ = 199794437 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 199794439.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199794431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7642 + ... + 21400.

It is an arithmetic number, because the mean of its divisors is an integer number (26921440).

Almost surely, 2^199794439 is an apocalyptic number.

199794439 is a deficient number, since it is larger than the sum of its proper divisors (15577081).

199794439 is a wasteful number, since it uses less digits than its factorization.

199794439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14889.

The product of its digits is 2204496, while the sum is 55.

The square root of 199794439 is about 14134.8660764791. The cubic root of 199794439 is about 584.6031242914.

The spelling of 199794439 in words is "one hundred ninety-nine million, seven hundred ninety-four thousand, four hundred thirty-nine".