199637089 has 16 divisors (see below), whose sum is σ = 211273920. Its totient is φ = 188395200.

The previous prime is 199637071. The next prime is 199637093. The reversal of 199637089 is 980736991.

199637089 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 199637089 - 2¹¹ = 199635041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (199635089) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 284439 + ... + 285139.

It is an arithmetic number, because the mean of its divisors is an integer number (13204620).

Almost surely, 2^199637089 is an apocalyptic number.

It is an amenable number.

199637089 is a deficient number, since it is larger than the sum of its proper divisors (11636831).

199637089 is a wasteful number, since it uses less digits than its factorization.

199637089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 960.

The product of its (nonzero) digits is 734832, while the sum is 52.

The square root of 199637089 is about 14129.2989564238. The cubic root of 199637089 is about 584.4496140784.

The spelling of 199637089 in words is "one hundred ninety-nine million, six hundred thirty-seven thousand, eighty-nine".