9999201 has 4 divisors (see below), whose sum is σ = 13332272. Its totient is φ = 6666132.

The previous prime is 9999193. The next prime is 9999217. The reversal of 9999201 is 1029999.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1029999 = 3 ⋅343333.

It is not a de Polignac number, because 9999201 - 2³ = 9999193 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 9999201.

It is not an unprimeable number, because it can be changed into a prime (9999221) 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, 1666531 + ... + 1666536.

It is an arithmetic number, because the mean of its divisors is an integer number (3333068).

Almost surely, 2^9999201 is an apocalyptic number.

It is an amenable number.

9999201 is a deficient number, since it is larger than the sum of its proper divisors (3333071).

9999201 is a wasteful number, since it uses less digits than its factorization.

9999201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3333070.

The product of its (nonzero) digits is 13122, while the sum is 39.

The square root of 9999201 is about 3162.1513246523. The cubic root of 9999201 is about 215.4377308726.

The spelling of 9999201 in words is "nine million, nine hundred ninety-nine thousand, two hundred one".