289890558068 has 12 divisors (see below), whose sum is σ = 507331061412. Its totient is φ = 144938826240.

The previous prime is 289890558047. The next prime is 289890558071. The reversal of 289890558068 is 860855098982.

It can be written as a sum of positive squares in 2 ways, for example, as 147227224804 + 142663333264 = 383702^2 + 377708^2 .

It is a junction number, because it is equal to n+sod(n) for n = 289890557989 and 289890558007.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1511405 + ... + 1692372.

It is an arithmetic number, because the mean of its divisors is an integer number (42277588451).

Almost surely, 2^289890558068 is an apocalyptic number.

It is an amenable number.

289890558068 is a deficient number, since it is larger than the sum of its proper divisors (217440503344).

289890558068 is a wasteful number, since it uses less digits than its factorization.

289890558068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3226402 (or 3226400 counting only the distinct ones).

The product of its (nonzero) digits is 99532800, while the sum is 68.

The spelling of 289890558068 in words is "two hundred eighty-nine billion, eight hundred ninety million, five hundred fifty-eight thousand, sixty-eight".