898584555969 has 27 divisors (see below), whose sum is σ = 1378871171587. Its totient is φ = 563787426624.

The previous prime is 898584555959. The next prime is 898584556013. The reversal of 898584555969 is 969555485898.

The square root of 898584555969 is 947937.

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

898584555969 is a `hidden beast` number, since 8 + 9 + 8 + 58 + 4 + 5 + 559 + 6 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 699590052225 + 198994503744 = 836415^2 + 446088^2 .

It is not a de Polignac number, because 898584555969 - 2⁵ = 898584555937 is a prime.

It is a super-2 number, since 2×898584555969² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (898584555929) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 48335494 + ... + 48354080.

Almost surely, 2^898584555969 is an apocalyptic number.

898584555969 is the 947937-th square number.

898584555969 is the 473969-th centered octagonal number.

It is an amenable number.

898584555969 is a deficient number, since it is larger than the sum of its proper divisors (480286615618).

898584555969 is an frugal number, since it uses more digits than its factorization.

898584555969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37214 (or 18607 counting only the distinct ones).

The product of its digits is 5598720000, while the sum is 81.

Multiplying 898584555969 by its sum of digits (81), we get a square (72785349033489 = 8531433²).

The spelling of 898584555969 in words is "eight hundred ninety-eight billion, five hundred eighty-four million, five hundred fifty-five thousand, nine hundred sixty-nine".