199999073 has 8 divisors (see below), whose sum is σ = 217317120. Its totient is φ = 183360240.

The previous prime is 199999061. The next prime is 199999081. The reversal of 199999073 is 370999991.

It is a happy number.

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 199999073 - 2⁴ = 199999057 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (199999043) 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, 169190 + ... + 170367.

It is an arithmetic number, because the mean of its divisors is an integer number (27164640).

Almost surely, 2^199999073 is an apocalyptic number.

It is an amenable number.

199999073 is a deficient number, since it is larger than the sum of its proper divisors (17318047).

199999073 is a wasteful number, since it uses less digits than its factorization.

199999073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339607.

The product of its (nonzero) digits is 1240029, while the sum is 56.

The square root of 199999073 is about 14142.1028492937. The cubic root of 199999073 is about 584.8026441197.

The spelling of 199999073 in words is "one hundred ninety-nine million, nine hundred ninety-nine thousand, seventy-three".