942779658239 has 2 divisors, whose sum is σ = 942779658240. Its totient is φ = 942779658238.

The previous prime is 942779658221. The next prime is 942779658241. The reversal of 942779658239 is 932856977249.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-942779658239 is a prime.

It is a super-2 number, since 2×942779658239² (a number of 25 digits) contains 22 as substring.

It is a Sophie Germain prime.

Together with 942779658241, 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 (942779618239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 471389829119 + 471389829120.

It is an arithmetic number, because the mean of its divisors is an integer number (471389829120).

Almost surely, 2^942779658239 is an apocalyptic number.

942779658239 is a deficient number, since it is larger than the sum of its proper divisors (1).

942779658239 is an equidigital number, since it uses as much as digits as its factorization.

942779658239 is an evil number, because the sum of its binary digits is even.

The product of its digits is 411505920, while the sum is 71.

The spelling of 942779658239 in words is "nine hundred forty-two billion, seven hundred seventy-nine million, six hundred fifty-eight thousand, two hundred thirty-nine".