8939939279 has 2 divisors, whose sum is σ = 8939939280. Its totient is φ = 8939939278.

The previous prime is 8939939269. The next prime is 8939939293. The reversal of 8939939279 is 9729399398.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8939939279 - 2²⁴ = 8923162063 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8939939249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4469969639 + 4469969640.

It is an arithmetic number, because the mean of its divisors is an integer number (4469969640).

Almost surely, 2^8939939279 is an apocalyptic number.

8939939279 is a deficient number, since it is larger than the sum of its proper divisors (1).

8939939279 is an equidigital number, since it uses as much as digits as its factorization.

8939939279 is an evil number, because the sum of its binary digits is even.

The product of its digits is 59521392, while the sum is 68.

The square root of 8939939279 is about 94551.2521281448. The cubic root of 8939939279 is about 2075.4464054507.

The spelling of 8939939279 in words is "eight billion, nine hundred thirty-nine million, nine hundred thirty-nine thousand, two hundred seventy-nine".