9971201 has 4 divisors (see below), whose sum is σ = 10029012. Its totient is φ = 9913392.

The previous prime is 9971179. The next prime is 9971207. The reversal of 9971201 is 1021799.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7706176 + 2265025 = 2776^2 + 1505^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9971201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9971207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28646 + ... + 28991.

It is an arithmetic number, because the mean of its divisors is an integer number (2507253).

Almost surely, 2^9971201 is an apocalyptic number.

It is an amenable number.

9971201 is a deficient number, since it is larger than the sum of its proper divisors (57811).

9971201 is a wasteful number, since it uses less digits than its factorization.

9971201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57810.

The product of its (nonzero) digits is 1134, while the sum is 29.

The square root of 9971201 is about 3157.7208553005. The cubic root of 9971201 is about 215.2364515972.

The spelling of 9971201 in words is "nine million, nine hundred seventy-one thousand, two hundred one".