289862715321 has 45 divisors (see below), whose sum is σ = 436867932501. Its totient is φ = 191532963528.

The previous prime is 289862715283. The next prime is 289862715323. The reversal of 289862715321 is 123517268982.

The square root of 289862715321 is 538389.

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

289862715321 is a `hidden beast` number, since 2 + 8 + 9 + 8 + 627 + 1 + 5 + 3 + 2 + 1 = 666.

289862715321 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 289862715321 - 2⁷ = 289862715193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (289862715323) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 789816480 + ... + 789816846.

Almost surely, 2^289862715321 is an apocalyptic number.

289862715321 is the 538389-th square number.

289862715321 is the 269195-th centered octagonal number.

It is an amenable number.

289862715321 is a deficient number, since it is larger than the sum of its proper divisors (147005217180).

289862715321 is an frugal number, since it uses more digits than its factorization.

289862715321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1072 (or 533 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 54.

The spelling of 289862715321 in words is "two hundred eighty-nine billion, eight hundred sixty-two million, seven hundred fifteen thousand, three hundred twenty-one".