395633340979 has 2 divisors, whose sum is σ = 395633340980. Its totient is φ = 395633340978.

The previous prime is 395633340887. The next prime is 395633340983. The reversal of 395633340979 is 979043336593.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 395633340979 - 2²¹ = 395631243827 is a prime.

It is not a weakly prime, because it can be changed into another prime (395633340379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 197816670489 + 197816670490.

It is an arithmetic number, because the mean of its divisors is an integer number (197816670490).

Almost surely, 2^395633340979 is an apocalyptic number.

395633340979 is a deficient number, since it is larger than the sum of its proper divisors (1).

395633340979 is an equidigital number, since it uses as much as digits as its factorization.

395633340979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 49601160, while the sum is 61.

The spelling of 395633340979 in words is "three hundred ninety-five billion, six hundred thirty-three million, three hundred forty thousand, nine hundred seventy-nine".