199997101 has 8 divisors (see below), whose sum is σ = 203502104. Its totient is φ = 196499520.

The previous prime is 199997081. The next prime is 199997107. The reversal of 199997101 is 101799991.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 763876 + 199233225 = 874^2 + 14115^2 .

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 199997101 - 2¹³ = 199988909 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 (199997107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96391 + ... + 98443.

It is an arithmetic number, because the mean of its divisors is an integer number (25437763).

Almost surely, 2^199997101 is an apocalyptic number.

It is an amenable number.

199997101 is a deficient number, since it is larger than the sum of its proper divisors (3505003).

199997101 is a wasteful number, since it uses less digits than its factorization.

199997101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3711.

The product of its (nonzero) digits is 45927, while the sum is 46.

The square root of 199997101 is about 14142.0331282316. The cubic root of 199997101 is about 584.8007220531.

The spelling of 199997101 in words is "one hundred ninety-nine million, nine hundred ninety-seven thousand, one hundred one".