3985311439897 has 8 divisors (see below), whose sum is σ = 4023517205120. Its totient is φ = 3947241881520.

The previous prime is 3985311439877. The next prime is 3985311439999. The reversal of 3985311439897 is 7989341135893.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 3985311439897 - 2¹⁹ = 3985310915609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3985311439877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33992913 + ... + 34109950.

It is an arithmetic number, because the mean of its divisors is an integer number (502939650640).

Almost surely, 2^{3985311439897} is an apocalyptic number.

It is an amenable number.

3985311439897 is a deficient number, since it is larger than the sum of its proper divisors (38205765223).

3985311439897 is a wasteful number, since it uses less digits than its factorization.

3985311439897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68103423.

The product of its digits is 176359680, while the sum is 70.

The spelling of 3985311439897 in words is "three trillion, nine hundred eighty-five billion, three hundred eleven million, four hundred thirty-nine thousand, eight hundred ninety-seven".