289784349 has 12 divisors (see below), whose sum is σ = 418750176. Its totient is φ = 193109832.

The previous prime is 289784347. The next prime is 289784357. The reversal of 289784349 is 943487982.

It is not a de Polignac number, because 289784349 - 2¹ = 289784347 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 289784295 and 289784304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (289784347) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23632 + ... + 33734.

It is an arithmetic number, because the mean of its divisors is an integer number (34895848).

Almost surely, 2^289784349 is an apocalyptic number.

It is an amenable number.

289784349 is a deficient number, since it is larger than the sum of its proper divisors (128965827).

289784349 is a wasteful number, since it uses less digits than its factorization.

289784349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13296 (or 13293 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 54.

The square root of 289784349 is about 17023.0534570035. The cubic root of 289784349 is about 661.7464832183.

The spelling of 289784349 in words is "two hundred eighty-nine million, seven hundred eighty-four thousand, three hundred forty-nine".