289325953989 has 6 divisors (see below), whose sum is σ = 417915266886. Its totient is φ = 192883969320.

The previous prime is 289325953981. The next prime is 289325954003. The reversal of 289325953989 is 989359523982.

289325953989 is a `hidden beast` number, since 2 + 8 + 9 + 3 + 2 + 5 + 9 + 539 + 89 = 666.

It can be written as a sum of positive squares in only one way, i.e., 225800784225 + 63525169764 = 475185^2 + 252042^2 .

It is not a de Polignac number, because 289325953989 - 2³ = 289325953981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (289325953981) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16073664102 + ... + 16073664119.

It is an arithmetic number, because the mean of its divisors is an integer number (69652544481).

Almost surely, 2^289325953989 is an apocalyptic number.

It is an amenable number.

289325953989 is a deficient number, since it is larger than the sum of its proper divisors (128589312897).

289325953989 is a wasteful number, since it uses less digits than its factorization.

289325953989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32147328227 (or 32147328224 counting only the distinct ones).

The product of its digits is 377913600, while the sum is 72.

It can be divided in two parts, 289 and 325953989, that added together give a triangular number (325954278 = T₂₅₅₃₂).

The spelling of 289325953989 in words is "two hundred eighty-nine billion, three hundred twenty-five million, nine hundred fifty-three thousand, nine hundred eighty-nine".