897917089 has 2 divisors, whose sum is σ = 897917090. Its totient is φ = 897917088.

The previous prime is 897917071. The next prime is 897917107. The reversal of 897917089 is 980719798.

It is a balanced prime because it is at equal distance from previous prime (897917071) and next prime (897917107).

It can be written as a sum of positive squares in only one way, i.e., 887027089 + 10890000 = 29783^2 + 3300^2 .

It is a cyclic number.

It is not a de Polignac number, because 897917089 - 2⁹ = 897916577 is a prime.

It is not a weakly prime, because it can be changed into another prime (897917389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 448958544 + 448958545.

It is an arithmetic number, because the mean of its divisors is an integer number (448958545).

Almost surely, 2^897917089 is an apocalyptic number.

It is an amenable number.

897917089 is a deficient number, since it is larger than the sum of its proper divisors (1).

897917089 is an equidigital number, since it uses as much as digits as its factorization.

897917089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2286144, while the sum is 58.

The square root of 897917089 is about 29965.2647076578. The cubic root of 897917089 is about 964.7439839159.

The spelling of 897917089 in words is "eight hundred ninety-seven million, nine hundred seventeen thousand, eighty-nine".