8979942157 has 2 divisors, whose sum is σ = 8979942158. Its totient is φ = 8979942156.

The previous prime is 8979942149. The next prime is 8979942161. The reversal of 8979942157 is 7512499798.

8979942157 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5222374756 + 3757567401 = 72266^2 + 61299^2 .

It is a cyclic number.

It is not a de Polignac number, because 8979942157 - 2³ = 8979942149 is a prime.

It is a super-2 number, since 2×8979942157² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 8979942095 and 8979942104.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8979942137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4489971078 + 4489971079.

It is an arithmetic number, because the mean of its divisors is an integer number (4489971079).

Almost surely, 2^8979942157 is an apocalyptic number.

It is an amenable number.

8979942157 is a deficient number, since it is larger than the sum of its proper divisors (1).

8979942157 is an equidigital number, since it uses as much as digits as its factorization.

8979942157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11430720, while the sum is 61.

The square root of 8979942157 is about 94762.5567246895. The cubic root of 8979942157 is about 2078.5374146169.

The spelling of 8979942157 in words is "eight billion, nine hundred seventy-nine million, nine hundred forty-two thousand, one hundred fifty-seven".