395978821363 has 8 divisors (see below), whose sum is σ = 396367570368. Its totient is φ = 395590240704.

The previous prime is 395978821351. The next prime is 395978821391. The reversal of 395978821363 is 363128879593.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-395978821363 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 395978821295 and 395978821304.

It is not an unprimeable number, because it can be changed into a prime (395978822363) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4951431 + ... + 5030767.

It is an arithmetic number, because the mean of its divisors is an integer number (49545946296).

Almost surely, 2^395978821363 is an apocalyptic number.

395978821363 is a deficient number, since it is larger than the sum of its proper divisors (388749005).

395978821363 is a wasteful number, since it uses less digits than its factorization.

395978821363 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84173.

The product of its digits is 58786560, while the sum is 64.

The spelling of 395978821363 in words is "three hundred ninety-five billion, nine hundred seventy-eight million, eight hundred twenty-one thousand, three hundred sixty-three".