979705896391 has 2 divisors, whose sum is σ = 979705896392. Its totient is φ = 979705896390.

The previous prime is 979705896329. The next prime is 979705896497. The reversal of 979705896391 is 193698507979.

979705896391 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 979705896391 - 2⁹ = 979705895879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (979705896791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 489852948195 + 489852948196.

It is an arithmetic number, because the mean of its divisors is an integer number (489852948196).

Almost surely, 2^979705896391 is an apocalyptic number.

979705896391 is a deficient number, since it is larger than the sum of its proper divisors (1).

979705896391 is an equidigital number, since it uses as much as digits as its factorization.

979705896391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 231472080, while the sum is 73.

The spelling of 979705896391 in words is "nine hundred seventy-nine billion, seven hundred five million, eight hundred ninety-six thousand, three hundred ninety-one".