8741639 has 2 divisors, whose sum is σ = 8741640. Its totient is φ = 8741638.

The previous prime is 8741609. The next prime is 8741641. The reversal of 8741639 is 9361478.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8741639 - 2¹² = 8737543 is a prime.

Together with 8741641, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8741609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4370819 + 4370820.

It is an arithmetic number, because the mean of its divisors is an integer number (4370820).

Almost surely, 2^8741639 is an apocalyptic number.

8741639 is a deficient number, since it is larger than the sum of its proper divisors (1).

8741639 is an equidigital number, since it uses as much as digits as its factorization.

8741639 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 38.

The square root of 8741639 is about 2956.6262868344. The cubic root of 8741639 is about 205.9986096617.

The spelling of 8741639 in words is "eight million, seven hundred forty-one thousand, six hundred thirty-nine".