289039239 has 8 divisors (see below), whose sum is σ = 428206320. Its totient is φ = 192692808.

The previous prime is 289039211. The next prime is 289039243. The reversal of 289039239 is 932930982.

It is not a de Polignac number, because 289039239 - 2⁷ = 289039111 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 289039194 and 289039203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (289039279) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5352552 + ... + 5352605.

It is an arithmetic number, because the mean of its divisors is an integer number (53525790).

Almost surely, 2^289039239 is an apocalyptic number.

289039239 is a deficient number, since it is larger than the sum of its proper divisors (139167081).

289039239 is a wasteful number, since it uses less digits than its factorization.

289039239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10705166 (or 10705160 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 45.

The square root of 289039239 is about 17001.1540490638. The cubic root of 289039239 is about 661.1788230081.

The spelling of 289039239 in words is "two hundred eighty-nine million, thirty-nine thousand, two hundred thirty-nine".