289209024722 has 6 divisors (see below), whose sum is σ = 433814677893. Its totient is φ = 144604132092.

The previous prime is 289209024679. The next prime is 289209024737. The reversal of 289209024722 is 227420902982.

It can be written as a sum of positive squares in 2 ways, for example, as 270983754721 + 18225270001 = 520561^2 + 135001^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=380269.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 570404 + ... + 950672.

Almost surely, 2^289209024722 is an apocalyptic number.

289209024722 is a deficient number, since it is larger than the sum of its proper divisors (144605653171).

289209024722 is an frugal number, since it uses more digits than its factorization.

289209024722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 760540 (or 380271 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 47.

The spelling of 289209024722 in words is "two hundred eighty-nine billion, two hundred nine million, twenty-four thousand, seven hundred twenty-two".