9903247 has 2 divisors, whose sum is σ = 9903248. Its totient is φ = 9903246.

The previous prime is 9903241. The next prime is 9903251. The reversal of 9903247 is 7423099.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9903247 is a prime.

It is a super-2 number, since 2×9903247² = 196148602286018, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9903241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4951623 + 4951624.

It is an arithmetic number, because the mean of its divisors is an integer number (4951624).

Almost surely, 2^9903247 is an apocalyptic number.

9903247 is a deficient number, since it is larger than the sum of its proper divisors (1).

9903247 is an equidigital number, since it uses as much as digits as its factorization.

9903247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 9903247 is about 3146.9424843807. The cubic root of 9903247 is about 214.7463892622.

The spelling of 9903247 in words is "nine million, nine hundred three thousand, two hundred forty-seven".