9890743 has 2 divisors, whose sum is σ = 9890744. Its totient is φ = 9890742.

The previous prime is 9890737. The next prime is 9890747. The reversal of 9890743 is 3470989.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9890743 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 9890696 and 9890705.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9890747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4945371 + 4945372.

It is an arithmetic number, because the mean of its divisors is an integer number (4945372).

Almost surely, 2^9890743 is an apocalyptic number.

9890743 is a deficient number, since it is larger than the sum of its proper divisors (1).

9890743 is an equidigital number, since it uses as much as digits as its factorization.

9890743 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 9890743 is about 3144.9551666121. The cubic root of 9890743 is about 214.6559704408.

The spelling of 9890743 in words is "nine million, eight hundred ninety thousand, seven hundred forty-three".