8743139 has 2 divisors, whose sum is σ = 8743140. Its totient is φ = 8743138.

The previous prime is 8743121. The next prime is 8743169. The reversal of 8743139 is 9313478.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8743139 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 8743099 and 8743108.

It is not a weakly prime, because it can be changed into another prime (8743169) 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, 4371569 + 4371570.

It is an arithmetic number, because the mean of its divisors is an integer number (4371570).

Almost surely, 2^8743139 is an apocalyptic number.

8743139 is a deficient number, since it is larger than the sum of its proper divisors (1).

8743139 is an equidigital number, since it uses as much as digits as its factorization.

8743139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18144, while the sum is 35.

The square root of 8743139 is about 2956.8799434539. The cubic root of 8743139 is about 206.0103915957.

The spelling of 8743139 in words is "eight million, seven hundred forty-three thousand, one hundred thirty-nine".