8997943 has 2 divisors, whose sum is σ = 8997944. Its totient is φ = 8997942.

The previous prime is 8997941. The next prime is 8997953. The reversal of 8997943 is 3497998.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8997943 - 2¹ = 8997941 is a prime.

Together with 8997941, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8997941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4498971 + 4498972.

It is an arithmetic number, because the mean of its divisors is an integer number (4498972).

Almost surely, 2^8997943 is an apocalyptic number.

8997943 is a deficient number, since it is larger than the sum of its proper divisors (1).

8997943 is an equidigital number, since it uses as much as digits as its factorization.

8997943 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 489888, while the sum is 49.

The square root of 8997943 is about 2999.6571470753. The cubic root of 8997943 is about 207.9925339406.

Subtracting from 8997943 its reverse (3497998), we obtain a palindrome (5499945).

The spelling of 8997943 in words is "eight million, nine hundred ninety-seven thousand, nine hundred forty-three".