289236369249 has 9 divisors (see below), whose sum is σ = 417788197203. Its totient is φ = 192823170552.

The previous prime is 289236369221. The next prime is 289236369263. The reversal of 289236369249 is 942963632982.

The square root of 289236369249 is 537807.

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

289236369249 is a `hidden beast` number, since 2 + 8 + 9 + 23 + 6 + 369 + 249 = 666.

It can be written as a sum of positive squares in only one way, i.e., 21802589649 + 267433779600 = 147657^2 + 517140^2 .

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 289236369249 - 2⁹ = 289236368737 is a prime.

It is not an unprimeable number, because it can be changed into a prime (289236369049) 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, 1523787 + ... + 1703055.

Almost surely, 2^289236369249 is an apocalyptic number.

289236369249 is the 537807-th square number.

289236369249 is the 268904-th centered octagonal number.

It is an amenable number.

289236369249 is a deficient number, since it is larger than the sum of its proper divisors (128551827954).

289236369249 is an frugal number, since it uses more digits than its factorization.

289236369249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358544 (or 179272 counting only the distinct ones).

The product of its digits is 60466176, while the sum is 63.

The spelling of 289236369249 in words is "two hundred eighty-nine billion, two hundred thirty-six million, three hundred sixty-nine thousand, two hundred forty-nine".