289371912489 has 27 divisors (see below), whose sum is σ = 459462563287. Its totient is φ = 175366158000.

The previous prime is 289371912439. The next prime is 289371912497. The reversal of 289371912489 is 984219173982.

The square root of 289371912489 is 537933.

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

289371912489 is a `hidden beast` number, since 2 + 89 + 3 + 71 + 9 + 1 + 2 + 489 = 666.

It can be written as a sum of positive squares in only one way, i.e., 243361662489 + 46010250000 = 493317^2 + 214500^2 .

It is not a de Polignac number, because 289371912489 - 2¹¹ = 289371910441 is a prime.

It is a super-2 number, since 2×289371912489² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (289371912409) 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, 17743639 + ... + 17759939.

Almost surely, 2^289371912489 is an apocalyptic number.

289371912489 is the 537933-rd square number.

289371912489 is the 268967-th centered octagonal number.

It is an amenable number.

289371912489 is a deficient number, since it is larger than the sum of its proper divisors (170090650798).

289371912489 is an frugal number, since it uses more digits than its factorization.

289371912489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32630 (or 16315 counting only the distinct ones).

The product of its digits is 15676416, while the sum is 63.

The spelling of 289371912489 in words is "two hundred eighty-nine billion, three hundred seventy-one million, nine hundred twelve thousand, four hundred eighty-nine".