199744001 has 4 divisors (see below), whose sum is σ = 199796400. Its totient is φ = 199691604.

The previous prime is 199743961. The next prime is 199744009. The reversal of 199744001 is 100447991.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 199744001 - 2²⁶ = 132635137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (199744009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19991 + ... + 28268.

It is an arithmetic number, because the mean of its divisors is an integer number (49949100).

Almost surely, 2^199744001 is an apocalyptic number.

It is an amenable number.

199744001 is a deficient number, since it is larger than the sum of its proper divisors (52399).

199744001 is an equidigital number, since it uses as much as digits as its factorization.

199744001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52398.

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 199744001 is about 14133.0817941453. The cubic root of 199744001 is about 584.5539259017.

The spelling of 199744001 in words is "one hundred ninety-nine million, seven hundred forty-four thousand, one".