8997239 has 2 divisors, whose sum is σ = 8997240. Its totient is φ = 8997238.

The previous prime is 8997217. The next prime is 8997259. The reversal of 8997239 is 9327998.

8997239 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8997239 - 2⁸ = 8996983 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 8997193 and 8997202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8997259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4498619 + 4498620.

It is an arithmetic number, because the mean of its divisors is an integer number (4498620).

Almost surely, 2^8997239 is an apocalyptic number.

8997239 is a deficient number, since it is larger than the sum of its proper divisors (1).

8997239 is an equidigital number, since it uses as much as digits as its factorization.

8997239 is an evil number, because the sum of its binary digits is even.

The product of its digits is 244944, while the sum is 47.

The square root of 8997239 is about 2999.5397980357. The cubic root of 8997239 is about 207.9871093466.

The spelling of 8997239 in words is "eight million, nine hundred ninety-seven thousand, two hundred thirty-nine".