989122031197 has 4 divisors (see below), whose sum is σ = 1003885046656. Its totient is φ = 974359015740.

The previous prime is 989122031189. The next prime is 989122031203. The reversal of 989122031197 is 791130221989.

It is a happy number.

989122031197 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 a cyclic number.

It is not a de Polignac number, because 989122031197 - 2³ = 989122031189 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 (989122038197) 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, 7381507629 + ... + 7381507762.

It is an arithmetic number, because the mean of its divisors is an integer number (250971261664).

Almost surely, 2^989122031197 is an apocalyptic number.

It is an amenable number.

989122031197 is a deficient number, since it is larger than the sum of its proper divisors (14763015459).

989122031197 is a wasteful number, since it uses less digits than its factorization.

989122031197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14763015458.

The product of its (nonzero) digits is 489888, while the sum is 52.

The spelling of 989122031197 in words is "nine hundred eighty-nine billion, one hundred twenty-two million, thirty-one thousand, one hundred ninety-seven".