979966157 has 2 divisors, whose sum is σ = 979966158. Its totient is φ = 979966156.

The previous prime is 979966123. The next prime is 979966181. The reversal of 979966157 is 751669979.

979966157 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., 754545961 + 225420196 = 27469^2 + 15014^2 .

It is an emirp because it is prime and its reverse (751669979) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 979966157 - 2²⁰ = 978917581 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 979966096 and 979966105.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (979966357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 489983078 + 489983079.

It is an arithmetic number, because the mean of its divisors is an integer number (489983079).

Almost surely, 2^979966157 is an apocalyptic number.

It is an amenable number.

979966157 is a deficient number, since it is larger than the sum of its proper divisors (1).

979966157 is an equidigital number, since it uses as much as digits as its factorization.

979966157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6429780, while the sum is 59.

The square root of 979966157 is about 31304.4111428406. The cubic root of 979966157 is about 993.2769542820.

The spelling of 979966157 in words is "nine hundred seventy-nine million, nine hundred sixty-six thousand, one hundred fifty-seven".