8975639 has 2 divisors, whose sum is σ = 8975640. Its totient is φ = 8975638.

The previous prime is 8975633. The next prime is 8975641. The reversal of 8975639 is 9365798.

8975639 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 8975639 - 2¹⁶ = 8910103 is a prime.

It is a Sophie Germain prime.

Together with 8975641, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 8975593 and 8975602.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8975633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4487819 + 4487820.

It is an arithmetic number, because the mean of its divisors is an integer number (4487820).

Almost surely, 2^8975639 is an apocalyptic number.

8975639 is a deficient number, since it is larger than the sum of its proper divisors (1).

8975639 is an equidigital number, since it uses as much as digits as its factorization.

8975639 is an evil number, because the sum of its binary digits is even.

The product of its digits is 408240, while the sum is 47.

The square root of 8975639 is about 2995.9370821164. The cubic root of 8975639 is about 207.8205352274.

The spelling of 8975639 in words is "eight million, nine hundred seventy-five thousand, six hundred thirty-nine".