898505897 has 2 divisors, whose sum is σ = 898505898. Its totient is φ = 898505896.

The previous prime is 898505837. The next prime is 898505911. The reversal of 898505897 is 798505898.

898505897 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 461863081 + 436642816 = 21491^2 + 20896^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-898505897 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (898505807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 449252948 + 449252949.

It is an arithmetic number, because the mean of its divisors is an integer number (449252949).

Almost surely, 2^898505897 is an apocalyptic number.

It is an amenable number.

898505897 is a deficient number, since it is larger than the sum of its proper divisors (1).

898505897 is an equidigital number, since it uses as much as digits as its factorization.

898505897 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7257600, while the sum is 59.

The square root of 898505897 is about 29975.0879398210. The cubic root of 898505897 is about 964.9548143894.

Subtracting from 898505897 its reverse (798505898), we obtain a palindrome (99999999).

The spelling of 898505897 in words is "eight hundred ninety-eight million, five hundred five thousand, eight hundred ninety-seven".