8122739 has 2 divisors, whose sum is σ = 8122740. Its totient is φ = 8122738.

The previous prime is 8122733. The next prime is 8122757. The reversal of 8122739 is 9372218.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8122739 - 2²⁰ = 7074163 is a prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (8122733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4061369 + 4061370.

It is an arithmetic number, because the mean of its divisors is an integer number (4061370).

Almost surely, 2^8122739 is an apocalyptic number.

8122739 is a deficient number, since it is larger than the sum of its proper divisors (1).

8122739 is an equidigital number, since it uses as much as digits as its factorization.

8122739 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6048, while the sum is 32.

The square root of 8122739 is about 2850.0419295161. The cubic root of 8122739 is about 201.0176382795.

The spelling of 8122739 in words is "eight million, one hundred twenty-two thousand, seven hundred thirty-nine".