898205421169 has 9 divisors (see below), whose sum is σ = 1044858921561. Its totient is φ = 769884674580.

The previous prime is 898205421163. The next prime is 898205421227. The reversal of 898205421169 is 961124502898.

The square root of 898205421169 is 947737.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 898205421169 - 2²⁵ = 898171866737 is a prime.

It is a super-2 number, since 2×898205421169² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (898205421163) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 6566464 + ... + 6701854.

It is an arithmetic number, because the mean of its divisors is an integer number (116095435729).

Almost surely, 2^898205421169 is an apocalyptic number.

898205421169 is the 947737-th square number.

898205421169 is the 473869-th centered octagonal number.

It is an amenable number.

898205421169 is a deficient number, since it is larger than the sum of its proper divisors (146653500392).

898205421169 is an frugal number, since it uses more digits than its factorization.

898205421169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270796 (or 135398 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 55.

The spelling of 898205421169 in words is "eight hundred ninety-eight billion, two hundred five million, four hundred twenty-one thousand, one hundred sixty-nine".