9991301 has 2 divisors, whose sum is σ = 9991302. Its totient is φ = 9991300.

The previous prime is 9991297. The next prime is 9991313. The reversal of 9991301 is 1031999.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9928801 + 62500 = 3151^2 + 250^2 .

It is an emirp because it is prime and its reverse (1031999) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9991301 - 2² = 9991297 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9931301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4995650 + 4995651.

It is an arithmetic number, because the mean of its divisors is an integer number (4995651).

Almost surely, 2^9991301 is an apocalyptic number.

It is an amenable number.

9991301 is a deficient number, since it is larger than the sum of its proper divisors (1).

9991301 is an equidigital number, since it uses as much as digits as its factorization.

9991301 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2187, while the sum is 32.

The square root of 9991301 is about 3160.9019282477. The cubic root of 9991301 is about 215.3809794552.

The spelling of 9991301 in words is "nine million, nine hundred ninety-one thousand, three hundred one".