289506444 has 24 divisors (see below), whose sum is σ = 691225920. Its totient is φ = 94257744.

The previous prime is 289506443. The next prime is 289506473. The reversal of 289506444 is 444605982.

289506444 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×289506444² = 167627962235050272, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 289506396 and 289506405.

It is not an unprimeable number, because it can be changed into a prime (289506443) 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, 280014 + ... + 281045.

It is an arithmetic number, because the mean of its divisors is an integer number (28801080).

Almost surely, 2^289506444 is an apocalyptic number.

It is an amenable number.

289506444 is an abundant number, since it is smaller than the sum of its proper divisors (401719476).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

289506444 is a wasteful number, since it uses less digits than its factorization.

289506444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 561109 (or 561107 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 42.

The square root of 289506444 is about 17014.8888917912. Note that the first 4 decimals coincide. The cubic root of 289506444 is about 661.5348758899.

The spelling of 289506444 in words is "two hundred eighty-nine million, five hundred six thousand, four hundred forty-four".