978560879 has 2 divisors, whose sum is σ = 978560880. Its totient is φ = 978560878.

The previous prime is 978560827. The next prime is 978560893. The reversal of 978560879 is 978065879.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 978560879 - 2¹² = 978556783 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (978560179) 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, 489280439 + 489280440.

It is an arithmetic number, because the mean of its divisors is an integer number (489280440).

Almost surely, 2^978560879 is an apocalyptic number.

978560879 is a deficient number, since it is larger than the sum of its proper divisors (1).

978560879 is an equidigital number, since it uses as much as digits as its factorization.

978560879 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7620480, while the sum is 59.

The square root of 978560879 is about 31281.9577232628. The cubic root of 978560879 is about 992.8019385604.

The spelling of 978560879 in words is "nine hundred seventy-eight million, five hundred sixty thousand, eight hundred seventy-nine".