897828797 has 2 divisors, whose sum is σ = 897828798. Its totient is φ = 897828796.

The previous prime is 897828787. The next prime is 897828809. The reversal of 897828797 is 797828798.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 834689881 + 63138916 = 28891^2 + 7946^2 .

It is a cyclic number.

It is not a de Polignac number, because 897828797 - 2⁴ = 897828781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (897828787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 448914398 + 448914399.

It is an arithmetic number, because the mean of its divisors is an integer number (448914399).

Almost surely, 2^897828797 is an apocalyptic number.

It is an amenable number.

897828797 is a deficient number, since it is larger than the sum of its proper divisors (1).

897828797 is an equidigital number, since it uses as much as digits as its factorization.

897828797 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28449792, while the sum is 65.

The square root of 897828797 is about 29963.7914323271. The cubic root of 897828797 is about 964.7123618545.

Subtracting from 897828797 its reverse (797828798), we obtain a palindrome (99999999).

The spelling of 897828797 in words is "eight hundred ninety-seven million, eight hundred twenty-eight thousand, seven hundred ninety-seven".