199238005 has 4 divisors (see below), whose sum is σ = 239085612. Its totient is φ = 159390400.

The previous prime is 199238003. The next prime is 199238059. The reversal of 199238005 is 500832991.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 63888049 + 135349956 = 7993^2 + 11634^2 .

It is not a de Polignac number, because 199238005 - 2¹ = 199238003 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 (199238003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19923796 + ... + 19923805.

It is an arithmetic number, because the mean of its divisors is an integer number (59771403).

Almost surely, 2^199238005 is an apocalyptic number.

It is an amenable number.

199238005 is a deficient number, since it is larger than the sum of its proper divisors (39847607).

199238005 is an equidigital number, since it uses as much as digits as its factorization.

199238005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39847606.

The product of its (nonzero) digits is 19440, while the sum is 37.

The square root of 199238005 is about 14115.1693223992. The cubic root of 199238005 is about 584.0599067916.

The spelling of 199238005 in words is "one hundred ninety-nine million, two hundred thirty-eight thousand, five".