9998741 has 2 divisors, whose sum is σ = 9998742. Its totient is φ = 9998740.

The previous prime is 9998719. The next prime is 9998743. The reversal of 9998741 is 1478999.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7263025 + 2735716 = 2695^2 + 1654^2 .

It is an emirp because it is prime and its reverse (1478999) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9998741 is a prime.

Together with 9998743, it forms a pair of twin primes.

It is a Chen prime.

It is a nialpdrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9998743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4999370 + 4999371.

It is an arithmetic number, because the mean of its divisors is an integer number (4999371).

Almost surely, 2^9998741 is an apocalyptic number.

It is an amenable number.

9998741 is a deficient number, since it is larger than the sum of its proper divisors (1).

9998741 is an equidigital number, since it uses as much as digits as its factorization.

9998741 is an evil number, because the sum of its binary digits is even.

The product of its digits is 163296, while the sum is 47.

The square root of 9998741 is about 3162.0785885237. The cubic root of 9998741 is about 215.4344271795.

The spelling of 9998741 in words is "nine million, nine hundred ninety-eight thousand, seven hundred forty-one".