395980085497 has 4 divisors (see below), whose sum is σ = 395983733860. Its totient is φ = 395976437136.

The previous prime is 395980085467. The next prime is 395980085521. The reversal of 395980085497 is 794580089593.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 243052944016 + 152927141481 = 493004^2 + 391059^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-395980085497 is a prime.

It is a super-2 number, since 2×395980085497² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (395980085437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1656222 + ... + 1880167.

It is an arithmetic number, because the mean of its divisors is an integer number (98995933465).

Almost surely, 2^395980085497 is an apocalyptic number.

It is an amenable number.

395980085497 is a deficient number, since it is larger than the sum of its proper divisors (3648363).

395980085497 is a wasteful number, since it uses less digits than its factorization.

395980085497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3648362.

The product of its (nonzero) digits is 97977600, while the sum is 67.

The spelling of 395980085497 in words is "three hundred ninety-five billion, nine hundred eighty million, eighty-five thousand, four hundred ninety-seven".