939718254869 has 2 divisors, whose sum is σ = 939718254870. Its totient is φ = 939718254868.

The previous prime is 939718254847. The next prime is 939718254929. The reversal of 939718254869 is 968452817939.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 513881091025 + 425837163844 = 716855^2 + 652562^2 .

It is an emirp because it is prime and its reverse (968452817939) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-939718254869 is a prime.

It is a super-2 number, since 2×939718254869² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (939718254169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 469859127434 + 469859127435.

It is an arithmetic number, because the mean of its divisors is an integer number (469859127435).

Almost surely, 2^939718254869 is an apocalyptic number.

It is an amenable number.

939718254869 is a deficient number, since it is larger than the sum of its proper divisors (1).

939718254869 is an equidigital number, since it uses as much as digits as its factorization.

939718254869 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 235146240, while the sum is 71.

The spelling of 939718254869 in words is "nine hundred thirty-nine billion, seven hundred eighteen million, two hundred fifty-four thousand, eight hundred sixty-nine".