999201 has 8 divisors (see below), whose sum is σ = 1522624. Its totient is φ = 570960.

The previous prime is 999199. The next prime is 999217. The reversal of 999201 is 102999.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 999201 - 2¹ = 999199 is a prime.

It is a Duffinian number.

It is a zygodrome in base 6.

It is not an unprimeable number, because it can be changed into a prime (999221) 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, 23770 + ... + 23811.

It is an arithmetic number, because the mean of its divisors is an integer number (190328).

2⁹⁹⁹²⁰¹ is an apocalyptic number.

It is an amenable number.

999201 is a deficient number, since it is larger than the sum of its proper divisors (523423).

999201 is a wasteful number, since it uses less digits than its factorization.

999201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47591.

The product of its (nonzero) digits is 1458, while the sum is 30.

The square root of 999201 is about 999.6004201680. The cubic root of 999201 is about 99.9733595702.

The spelling of 999201 in words is "nine hundred ninety-nine thousand, two hundred one".