979879871 has 2 divisors, whose sum is σ = 979879872. Its totient is φ = 979879870.

The previous prime is 979879841. The next prime is 979879883. The reversal of 979879871 is 178978979.

It is a strong prime.

It is an emirp because it is prime and its reverse (178978979) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 979879871 - 2¹⁴ = 979863487 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 979879798 and 979879807.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (979879801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 489939935 + 489939936.

It is an arithmetic number, because the mean of its divisors is an integer number (489939936).

Almost surely, 2^979879871 is an apocalyptic number.

979879871 is a deficient number, since it is larger than the sum of its proper divisors (1).

979879871 is an equidigital number, since it uses as much as digits as its factorization.

979879871 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16003008, while the sum is 65.

The square root of 979879871 is about 31303.0329361230. The cubic root of 979879871 is about 993.2478007545.

The spelling of 979879871 in words is "nine hundred seventy-nine million, eight hundred seventy-nine thousand, eight hundred seventy-one".