897134789 has 4 divisors (see below), whose sum is σ = 897245760. Its totient is φ = 897023820.

The previous prime is 897134783. The next prime is 897134813. The reversal of 897134789 is 987431798.

897134789 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, and also an emirpimes, since its reverse is a distinct semiprime: 987431798 = 2 ⋅493715899.

It is a cyclic number.

It is not a de Polignac number, because 897134789 - 2²⁴ = 880357573 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 (897134783) 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, 42317 + ... + 59874.

It is an arithmetic number, because the mean of its divisors is an integer number (224311440).

Almost surely, 2^897134789 is an apocalyptic number.

It is an amenable number.

897134789 is a deficient number, since it is larger than the sum of its proper divisors (110971).

897134789 is a wasteful number, since it uses less digits than its factorization.

897134789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110970.

The product of its digits is 3048192, while the sum is 56.

The square root of 897134789 is about 29952.2084160751. The cubic root of 897134789 is about 964.4637284542.

The spelling of 897134789 in words is "eight hundred ninety-seven million, one hundred thirty-four thousand, seven hundred eighty-nine".