897982289797 has 4 divisors (see below), whose sum is σ = 898624165600. Its totient is φ = 897340413996.

The previous prime is 897982289791. The next prime is 897982289803. The reversal of 897982289797 is 797982289798.

It is a happy number.

897982289797 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (897982289791) and next prime (897982289803).

It is a cyclic number.

It is not a de Polignac number, because 897982289797 - 2¹⁹ = 897981765509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (897982289791) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 320935803 + ... + 320938600.

It is an arithmetic number, because the mean of its divisors is an integer number (224656041400).

Almost surely, 2^897982289797 is an apocalyptic number.

It is an amenable number.

897982289797 is a deficient number, since it is larger than the sum of its proper divisors (641875803).

897982289797 is a wasteful number, since it uses less digits than its factorization.

897982289797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 641875802.

The product of its digits is 4608866304, while the sum is 85.

Subtracting from 897982289797 its reverse (797982289798), we obtain a palindrome (99999999999).

The spelling of 897982289797 in words is "eight hundred ninety-seven billion, nine hundred eighty-two million, two hundred eighty-nine thousand, seven hundred ninety-seven".