9724201 has 2 divisors, whose sum is σ = 9724202. Its totient is φ = 9724200.

The previous prime is 9724171. The next prime is 9724207. The reversal of 9724201 is 1024279.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9000000 + 724201 = 3000^2 + 851^2 .

It is a cyclic number.

It is not a de Polignac number, because 9724201 - 2¹⁵ = 9691433 is a prime.

9724201 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (9724207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4862100 + 4862101.

It is an arithmetic number, because the mean of its divisors is an integer number (4862101).

Almost surely, 2^9724201 is an apocalyptic number.

It is an amenable number.

9724201 is a deficient number, since it is larger than the sum of its proper divisors (1).

9724201 is an equidigital number, since it uses as much as digits as its factorization.

9724201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 9724201 is about 3118.3651165314. The cubic root of 9724201 is about 213.4443397438. Note that the first 3 decimals are identical.

It can be divided in two parts, 9 and 724201, that multiplied together give a square (6517809 = 2553²).

The spelling of 9724201 in words is "nine million, seven hundred twenty-four thousand, two hundred one".