395260671979 has 2 divisors, whose sum is σ = 395260671980. Its totient is φ = 395260671978.

The previous prime is 395260671919. The next prime is 395260671983. The reversal of 395260671979 is 979176062593.

It is a strong prime.

It is an emirp because it is prime and its reverse (979176062593) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 395260671979 - 2⁷ = 395260671851 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 395260671979.

It is not a weakly prime, because it can be changed into another prime (395260671919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 197630335989 + 197630335990.

It is an arithmetic number, because the mean of its divisors is an integer number (197630335990).

Almost surely, 2^395260671979 is an apocalyptic number.

395260671979 is a deficient number, since it is larger than the sum of its proper divisors (1).

395260671979 is an equidigital number, since it uses as much as digits as its factorization.

395260671979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38578680, while the sum is 64.

The spelling of 395260671979 in words is "three hundred ninety-five billion, two hundred sixty million, six hundred seventy-one thousand, nine hundred seventy-nine".